Worse than anything in my eyes is this shows Huggins isn't interested in improving himself. Entering rehab wasn't done to get him back to his best self; it was done to get his job back as his old self.
Instead of seeing this as serving his time "on the treadmill" (as he's so fond of making others do) for messing up (and which he should probably do literally), waiting until the end of the season, and then walking in saying "Hey, I'm the best candidate for the job!" he's going this route?
The only legal standing I see is him walking away, going to rehab, going through all the hoops, as a condition for reinstatement next year. If that is the case, then that could be why the university has stated he still has to pay alphabet soup people what he owes them. If he had resigned, he wouldn't owe that obligation as that was ordered by the university and not by any court. That's what didn't make sense.
By the university coming out and saying they wouldn't accept him back last week, I believe got the ball rolling. Huggins knows he's not hirable right now, and may never be again, (at any other institution). This is his only chance, if this is the advice he's getting, and he's willing to burn everything down around him to get it.
Should be an interesting next few months. Huggins can open up a huge can of worms if he knows where the bodies are buried so to speak. He can take everyone down with him. Guess we'll just have to wait to see...