The R's have to spin this right. Whoever has the best soundbites first wins.
"The laws of the state of New Jersey do not contain a 'we think we're going to lose so we get to pick someone new' clause,"
However, what F needs to do, RIGHT NOW, is get out in front and Clearly define himself, before the DNC, and any replacement they may try to field, starts going negative on Him.
With no Face on the Democratic side, to respond, he can paint his picture as he likes, and build an image for the Public, that will boost his favorables, forcing an opponent to do more deconstruction, then he can play the "they have no issues, so they are going negative" game.