Him and his whole family. His oldest son is now a freshman up there at the U as is on the drum-line for their marching band. He definitely doesn't hate BYU or its teams, because that would be weird to do as a BYU professor who likely has a few BYU football players and other athletes in some of his classes, but since he is a U alum, he has maintained his loyalty for cheering the U sports teams.
I know that the director of BYUtv Sports is also a U guy.
Point is that those are a couple more examples of how much more cross over there is between the two schools. And goes to show that there are also a good number of members out there who may be Utah fans first, but do also support and cheer on BYU anytime they're not playing Utah.