I say let him back in then NEVER call on him again.
Let him stew in anger, unable to get the mic... EVER
Really? You think President Trump possesses that kind of self-discipline?
He would spend the entire press conference screaming from the back of the room.
The ONLY solution is to stop holding press conferences
To that, CNN will sue again, and a judge will order the president to answer Jim Acosta's questions. And Jim Acosta will not be required to give back the mic back until Jim Acosta says that he's done.
Oh I would call on him first and let him ask his question then I simply would move on to the next person. As soon as Baby Jimmy starts whining and interrupting I would cancel the rest of the conference. I would do that everyday until his peers exert pressure on this clown to behave.