Judge Slams Conrad Murray and Joe Jackson

10/13/2010 2:55 PM PDT

Joe Jackson Wrongful Death Lawsuit

The judge in the wrongful death lawsuit Joe Jackson filed against Dr. Conrad Murray lashed out at both sides ... saying they both screwed up.

Judge John Walter denied Dr. Murray's motion to dismiss the case, concluding Murray's lawyer, Charles Peckham, violated court rules by not trying to resolve the issues with Joe's attorney before filing his motion.

But the judge also said Joe's lawyer, Brian Oxman, was slow on the uptake in filing his opposition papers ... missing the deadline.

But the judge's ruling isn't permanent.  Murray's lawyer is allowed to refile.  We're told Peckham will call Oxman -- who almost certainly will tell Peckham to go screw himself -- and then Peckham can refile his motion to get the case thrown out.