My reasoning is this.
In this case he got EXTREMELY LUCKY. I'm thrilled. He should be too. He could've killed someone. How's life after that? Prison, guilt, permanent record, terrible life.
If you go soft on this, how will it look when the next player does it but then DOES hurt or kill someone? If I were the coach I'd look pretty culpable for not setting the disciplinary tone early on. Zero tolerance policy will help other players who want to party to plan accordingly. Yeah, apparently they do party.
Sure, stay in school. Maybe work your way back onto the team the following season. But you're gone if I'm the coach. DUI? Seriously? Is this actually a debate? We're not just talking about drinking here and getting caught. Plenty of Universities outside Utah kick players off for such infractions.
With so many players, meetings, games, workouts, grades, etc. There's just too much as a coach to worry about let alone this kind of drama. The school has plenty of support mechanisms for him. The longer the team stays connected it's just a distraction for the season we need to focus on.
Yeah. It's so mean. But then again so is planning your evening driving a car when you have no control of it. It's really no different than randomly shooting a gun in the streets without looking. Ridiculous analogy, yet true.