People can try and split hairs all they want, BYU is virtually synonymous with the Church. If you are a member of the Church, you really have no reason to not root for BYU, let alone against it. I can understand non-Mormons and jack-Mormons rooting for the U. That makes sense. But if you're a member, you really have no excuse. Especially when a good portion of the Ute fan base is very anti-Mormon. Not that most LDS Ute fans will ever acknowledge that fact.