Utah State, USF and UNR teams with their second and third teams. BYU has lost to some very, very mediocre football teams this year. There is no excuse whatsoever for Bronco's record against the instate schools. There is no excuse for his tendency to lose to mediocre teams, even when his teams ARE healthy, either.
His overall record since 2010 is mediocre at best (especially given BYU's weak schedules), and his record against decent BCS conference teams is abysmal. I've never been a "fire Bronco" guy, but, unless you're content for BYU to remain mired in mediocrity indefinitely, the time for change is now.