Celebrity Rehab

The former Skid Row singer was pounding wine from the bottle and smoking a funny looking cigarette with his pal Sen Dog from Cypress Hill in Hollywood ... when he went off on Drew for repeatedly trying to recruit him to the show.

Bach has had a beef with "Celebrity Rehab" for a while -- last year he revealed, "They ask me every season. I’m not interested in making bad art. Celebrity Rehab with Dr. Drew is out of control. That show sucks."

But last night -- Bach was in full attack mode ... taking several sarcastic jabs at Drew ... before making the "quack" crack.

TMZ has obtained a letter from the folks at Pornhub.com, offering Demi a chance to be featured on their site. The company is obviously excited (no pun intended) at the idea of a Demi sex tape -- even though her people say the rumors are "disgusting."

Pornhub is offering Demi $100,000 for the tape -- even offering her the caveat that, "You don't have to star with male talent, we are willing to accept a solo or Girl-Girl scene just as long as it's shot in HD."

Demi's rep tells TMZ, "Perpetrating these completely unfounded rumors from supposed sources while Demi is in treatment dealing with serious physical and emotional issues is disgusting."

The rep goes on: "The sourcing on this report is so spotty that it is hard to fully respond."

As for claims that Demi's uncle, Francisco Lovato, kept people out of her tour while she had sex inside, Lovato's rep bristles, "Francisco Lovato is the brother of Demi's estranged father. He never traveled on the tour, and certainly didn't serve as some sort of chaperone."

According to docs filed this week in LA County small claims court, P3R Publicity claims Wahler breached a contract by failing to make payments to the tune of $5,000.

P3R tells us, "Considering Jason Wahler's track record, P3R is disappointed but not entirely shocked by his lack of honor and irresponsible behavior." They added, "Perhaps his next reality show should be VH1's "Charm School.'"

Mueller was spotted yesterday (above) leaving the Farmer's Daughter Hotel -- located near the famous Farmer's Market in Los Angeles -- at around 10:00 AM on Thanksgiving morning. As you can see from the photo, Mueller looks like she had quite the evening.

The photographer tells TMZ Mueller was escorted straight from the hotel to a sober living facility in Beverly Hills.

Mueller has been in and out of rehab in the last few years.

TMZ made multiple attempts to contact Mueller. We never heard back.

Patrick's rep tells TMZ ... the 57-year-old actor checked himself in to the rehab clinic Wednesday afternoon -- in an effort to "get a grip on his addiction and educate himself."

We're told Patrick's family has been pushing for the actor to seek professional help for roughly 30 years ... and are "very happy and supportive" of his decision.

Demi's rep tells TMZ ... "Demi Lovato is not in treatment for drug or alcohol addiction. As we have said since she entered treatment last week, Demi decided to seek help for emotional and physical issues she has battled throughout her life."

The rep adds, "She has taken this step in order to get her life in order. While we know many are interested in Demi and her life, we do ask for a modicum of privacy during this difficult time."

TMZ has learned season 2 of the teen sitcom went on hiatus in July so Demi could go on tour with the Jonas Brothers -- and last month, Disney told the cast and crew that production was set to resume in mid-January.

Sources tell TMZ ... Alex Welch was on the receiving end of Demi's blow. Welch is a backup dancer on the Jonas Brothers Live in Concert Tour. She was also a member of Beat Freaks, which got the runner-up title on season 3 of "America's Best Dance Crew."

We're told Welch -- who had a pretty nasty shiner from the incident -- has been talking to lawyers and is considering legal action.

Sources close to Demi say she feels "awful" about her behavior and took personal responsibility for it by leaving the tour and seeking help.

We're told Demi's issues with bullies go all the way back to middle school -- where she felt her acting career made her a target. Our sources say Demi subsequently engaged in self-destructive behavior that is a manifestation of being bullied.

In fact -- back in 2008, Demi told Ellen DeGeneres that she was bullied so badly in 7th grade, she pulled out of her middle school and switched to a home school program.

In a statement to TMZ, the 18-year-old singer's rep says, "Demi Lovato left her tour early this weekend in order to seek medical treatment for emotional and physical issues she has dealt with for some time."

We're told Demi is not seeking treatment for drug use.

The statement continues, "Demi has decided to take personal responsibility for her actions and seek help. She is doing just that."

The rep concludes, "[Demi] regrets not being able to finish her tour, but is looking forward to getting back to work in the near future."

Sources close to Lovato tell us the singer was in a physical altercation with a female member of her tour recently ... which was a "catalyst" in her decision to seek professional help.

It's pretty stunning that Lindsay said this, since inpatient rehab was her only hope of staying out of jail.

The documents, prepared for today's hearing, say, "The defendant says her clothing line is falling apart because she is not available to monitor the product." She told the probation officer she's scheduled to start working on a movie in November -- we're guessing it's "Inferno" but the director tells us he will wait for her.

Lohan is due back in court on February 25. She will be subject to drug testing in between her release from rehab until her court date. If Lindsay does not test positive for drugs or alcohol before her next scheduled during that time, he will convert her sentence to unsupervised probation.

The D.A recommended Lindsay get 180 days in county jail. The judge specifically stated he wanted Lindsay in rehab past the New Year.

The judge said to Lindsay at one point, "You are an addict. I hope you understand that." Lindsay nodded her head in agreement.

He added, "I don't want another train wreck."

Lindsay's estranged father, Michael Lohan, sat on the opposite side of the court from Lindsay's mother, Dina.

Lindsay was in tears at the end of the hearing and when asked if she understood the judge's ruling, she responded, "No, your honor. I understand. Thank you."

Our reporter in the court said Lindsay showed off her SCRAM bracelet to her mother during the hearing and motioned as if she really wanted it removed. We're told that will happen soon.

Sean, who was also on Season 2 of "Celebrity Rehab," was pulled over for a traffic violation in the San Fernando Valley on Tuesday -- when police discovered he had an outstanding warrant for driving on a suspended license.

We're told Beverly Hills PD came to the scene and took Sean to 90210 jail, where he was booked at 4:33pm.

Sources tell TMZ Dina is hoping to set up a meeting of the matriarchs while she's in town visiting Lindsay in Betty Ford. We're told Dina plans on being in L.A. for about a week and would love to pick Kris' brain about how the Kardashian girls managed to do so well in the media spotlight ... while Lindsay has not.

Our sources say Lindsay and Kim had become close before Lindsay went to jail -- the two of them even met up while Lindsay was in NY visiting family back in September.