I believe that Pac-12 officials have taken on the NBA mentality in a bad way. Personal likes and dislikes of coaches and players influences their officiating. Further, there is a level of ego that should not be seen in officials and it rears its ugly head when something happens that embarrasses these officials.
My personal belief, and something for which no one will change my opinion, is that the national hubbub over the Chen shot in Tucson and Tad's statements afterward caused the Buffs to get boned by Pac-12 officials the rest of the season. This was especially evident in that the Buffs rarely got the majority of 50/50 calls when playing at home. It reached a head in the Arizona State game when the officials allowed thugball, lost control, and even called a foul on Jelly for a play on which he got knocked out by a blow to the head.
Ed Rush is responsible for this. The comments he made in the officials meeting regarding Zona's Miller were not, I believe, an isolated incident. Rather, these comments are a peek behind the curtain at the culture that Rush is creating. Larry Scott must move quickly and decisively to fix this issue. It compromises the Pac-12 competition along with the national brand image.