He delivered one of the most heartless insults of 2010 -- yet Katherine Jackson maintained her united front showing up to court with Joe Jackson for the Conrad Murray hearing.
We don't know if they drove in the same car together, but Katherine walked into the courtroom with Joe and sat with La Toya and Jermaine.
Katherine and Joe didn't really speak to each other in court, and Joe at one point put on his shades and seemed to doze off.
Pretty stunning -- they were sitting in court looking at the man who is charged with the death of Michael Jackson, after Joe said over the weekend ... his wife was partly to blame.
Shocker -- Katherine Shows Up in Court with Joe!
6/14/2010 6:10 PM PDT BY TMZ STAFF
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