Evidently, Phil has no sense of who he is or his accomplishments. Won a NC, has a top 10 SEC coaching record, and is a HOF member. "Helping" ETSU would be fine; but not in a HC capacity. Why demean an outstanding legacy? As each UT coaching hire fizzles, Phil looks better & better. I would not mess with that. Additionally, Phil's assistants were prominent in his successes.
Maybe it's for the love of the game..
Phil knows he accomplished a lot here, but he might enjoy coaching.