Somebody may have leverage on him, due to "something" he "may" have done in the past. Would be a pity if the white hats have the evidence thereof.
Will be on many a meme.
At this point, he WANTS the prejudiced mistrial, because in their minds that is better than an outright unanimous jury acquittal. "We had him, and that dirtbag judge screwed us!"
There is stupid. There is scared. Scared and stupid both is next level.