Penn State fired Franklin early and ended up barely getting a solid coach. Just got a bunch of raises for other coaches on their wish list. I suppose if we want to do that to get other programs to give their coaches raises, that would be the BEST argument to make a move now. Make other programs use up resources.
They also had to deal with the interim coach (alum, I believe) going 4-4, winning a bowl game, and becoming a bit of a fan/player favorite. They ended up having to keep him on the staff with the new coach.
What if that happens here? Fire Autry... Griffin takes over... and the team looks better than they have all year... solid improvement, but not quite enough to make the Big Dance. Wins an ACC tourney game though. And then wins a few NIT games for good measure. Now that clean transition is not so clean.
The better move is to wait until there is clear certainty that there is not enough time for even an interim to show anything. Announce he is not being retained... let him finish out the year. Barring scandal, there is no reason to fire a coach with his much season left.