There's a pretty standard template for the way that shame usually plays out in American sports. First the disgraced person disappears for a year. Then he shows up on ESPN for awhile. Then he takes a low-level job for awhile, has some success, and only THEN is he considered rehabilitated enough for a high-profile job again. I can completely see Auburn or somebody being willing to hire him, but he's going to have to go through the shame cycle first.
Pearl's about to turn 51. If he can't figure out a way to keep this Tennessee job, he's going to lose a giant chunk of the decent working years he has left while in exile. By the time he works his way back up to an Auburn-type job, he'd be 57 or 58. I can easily see him getting very comfortable in an ESPN-type gig (where he'd be very good, obviously) and just settling into that instead.