When they start the shenanigans he should just walk out on national tv and hold an impromptu press conference.
I Agree!
He should ask any question he wants. If they cut him off he should walk off the stage. He can have someone get a text and signal him to walk off.
He could also just say the following at the beginning of the debate. Because I am not able to ask a question about the Biden CRIME family, I am not participating in this sham and walk off the stage.