"There's the rub," as some guy named Hamlet said in some play when he was was contemplating suicide.
As best as I can tell the Arizona fans, the Arizona administration and the Arizona Board of Regents think Sean Miller's behavior is fine. They just want him to win a Natty. They think that this whole thing, with the exception of what Book and another former assistant coach did, is a witch hunt. They, again as best as I can tell, do not think Sean Miller did anything wrong.
I haven't heard anything from sources in Arizona that lead me to think that UA is even remotely thinking about firing Miller. So he'd have a show cause but would still be coaching the team.
At one point I thought a tournament ban was a big deal but I am not sure it is anymore.
The top kids all say they want to win a national championship, and I'm sure they'd love to compete for one, but their number one goal is getting to the NBA. That dream is will still be alive despite a post season ban since they'll still be on TV and since NBA Scouts will still come to their games, practices or watch their scout video. If Miller is still the coach and he still gets players to the league, I think he'll still be able to recruit.