Yeah at this point I'd say what the heck, let's start Hayward and Rob Williams just to see what happens.
Of course, the problem is that the beginning of games is not where these games have been won. The Celts might build an early lead off some kind of lineup adjustment, but in the fourth quarter are they gonna be able to hold off the Heat?
To come back from 3-1 you need to do everything really well, if not perfect, and you need your opponent to fall apart a little.
Honestly I think the only hope for the Celts would be if Bam is significantly limited by injury. Otherwise I think we're talking about expecting the Celts to drastically change who they are. Too late for that.