His ego isn't that big IMO, certainly not as big as some. He supposedly didn't have a real fun time at Tennessee, especially the last year or so of his tenure. He thought he could be successful there, and even though it was a bad fit (mostly because of the toxic that Fulmer brings) that (IMO) was more of an indication of his confidence rather than his ego. Regardless, it didn't end well for him there on and off the field and his reputation has taken a beating (some of it deserved, some of it not). But, the dude lives and breathes football. That's all he cares to do, is be around it and coach it. I think down the road he would like to be a HC again, at the right time and the right place. But he's got to rebuild his reputation now, and there's no better place to do that than back at Alabama (a place he loves and has told people he'd be open to returning to). Saban thinks the world of his abilities as a coach, teacher on the field, recruiter (Saban built him into the recruiter he is), and evaluator. He also brings some intangibles with in-game coaching that are rare. Can it be worked out to bring him back right now? I don't know.... there are obstacles there. But, both sides are aware of the interest, and have been for a while.
I know how much Mack Wilson loved him at Alabama, and if he can build that unity with players, turn them into good men, and keep doing it class after class there really aren't obstacles out there that can't be overcome. I mean, shit, if a coach can come back after rape coverups, assaults, hookers, DUI's, bad attitudes, paying players (now legal) and anything else I may have missed, Pruitt can come back from what happened in Knoxville. I love his intensity, he knows how to coach and have success, he's a guy I want on our staff.