OK, here is my spin on it. When Dooley took the UT job, he actually got it for pretty much the same reason Lane Kiffin keeps getting good jobs; Both being sons of great coaches, they know how to do well in job interviews, but when it comes to following through on the job, they are both seriously flawed in different ways.
Dooley's fault was his arrogance. During his three years at Tennessee, he mostly brought in quality assistant coaches, but did a poor job of retaining, evaluating, and leading them. I think the revolving door was spinning faster and faster, because many of them realized that Dooley was lazy in attracting and evaluating recruits (he thought, "This is Tennessee, and I an Vince Dooley's son, recruits should be begging me to play), and staying was not building a quality resume. He also actually thought that Sunseri would make a great DC, because he was effective with LB at Bama, and deserved a promotion. Actually, Sunseri was in way over his head, but was too dumb to see it.
I think Dooley liked Sunseri because he shared his arrogance. Sunseri was of the opinion he could belittle players into performing. Sunseri's schematic philosophy change just didn't fit the players abilities, and mass confusion ensued during the games because his anger just made matters worse. Dooley just blamed the players, and this led to them getting frustrated. Not a good environment to learn.
When your head coach's priorities are less about building players up, recruiting and building relationships, and more about entertaining press conferences and embarrassing players (remember the shower discipline statement?), his program is not going to thrive. Thank God his sorry butt is gone. And if some AD anywhere ever considers him for a head coaching job in the future, he needs a through psychiatric evaluation.
