Very surprised by all the hate on Alvarez. Getting criticized for coaching the bowl games of coach-less teams is ridiculous. He takes care of a lot of the head coaching stuff so the assistants can focus on their regular jobs and preparation so they can go out and win an important football game. There aren't many ADs that happen to have been excellent football coaches at the same university with a close connection to the team. And the players all asked him to. And so what if he gets paid for it (which by the way was only 118k for the Rose Bowl)?
I completely disagree that Alvarez is the issue. Bielema point blank said when he left that it was about the money, moreso for his assistants than for himself. UW Football brings in a lot of money and they need to pony up more if they want to keep good coaching around or they'll start to fade.
Completely agree with your points here. To me, having a former coach who is now the AD step in to coach a team that just had their coach leaves seems completely logical.
Alvarez is likely much more familiar with the program and team than any new coach who they could bring in. If they promote an assistant temporarily, coaching duties get shuffled. This seems to me like a resourceful way to handle the situation.
After the bowl, you ramp up the search for a permanent head coach.