Hmmm... a plan to force a mistrial to let the prosecution off the hook rather than a “not guilty” verdict?
Mistrial motions must be made contemporaneously with the occurrence. You can’t ask for a mistrial the day after. I don’t know whether Florida law allows a judge to call a mistrial “sua sponte,” meaning “this farce has gone on long enough and I’m red-flagging the race.” But I doubt she will do that.
For her to call a mistrial, the state is going to have to deliberately throw a “harpoon,” the kind of question that elicits and answer so prejudicial that no appellate court would let the conviction stand. Typical harpoons involve questions relating to a defendant’s prior criminal record. In this case, it could be the prosecutor stating “We had an expert who was going to say it was poor little Trayvon calling for help, but the Judge wouldn’t let you hear it.”