Personally, I thought it was pretty funny, but shocking. I haven't seen a ref actually tell a fan to leave since Bengalhater was shown the door against Boise State in the Craven's years. but lets be honest, after Supaman, there were a lot of times I wished I would have been thrown out during those years. I still have nightmares about that lack luster motion offense Craven's teams ran.
Anyway, good points on both sides. Yes, I think a ref has the right to throw out a fan, but at the same time, I think there are times that refs goes too far. Depends on a number of factors. Were the fans warned before being thrown out, or was it an arbitrary reaction by the ref against a fan? Was the ref trying to make an example of one fan to show how powerful he was to the other fans? If the fan was warned and security had already spoken with him, then yes, the ref should throw him out. If a fan is making threats of personal harm, yes throw him out. But if the ref has been calling a bad game, which that ref had been doing, and he is trying to scare the crowd, then no the ref shouldn't be allowed to through out a fan. There are plenty of timeouts. If there is an issue with a specific fan, then the ref can talk to security during one of the many timeouts and have the fan reprimand appropriatly. If security deems that the fan is a threat remove him. There should be some steps that a ref should follow before a fan is kicked out of the game.
Utah State's fans can be bad, but if you really want to see great examples of classless fans head on up to Missoula or Laramie. Two great places to observe absolute classlessness.