From Kiffin's prespective, it's a no-brain win. He realizes that he won't get another HC job in forever. The only thing to do is jumpstart his life. Drop down to being an OC under one of the greatest college football coaches and learn "the system." Keep your nose clean for 4 or 5 years, win a NC or two (I certainly hope not), show everyone that you've grown up (assuming he has), and still by age 50 he can be a head coach again.
As for Bama, this is the weirdest hire I can imagine. No way you can be 100% he won't do something totally immature and irresponsible. Jeopardizing the team chemistry. The guy has been poison everywhere he's gone. Just don't get it.
Impossible to disagree with this. Bama has nothing to gain and everything to lose. He's in Tuscaloosa spewing cancer everywhere as we speak.