probably the more 50/50 ticky tack stuff that has been referenced by many a Utah fan narrative and guys like Joel Klatt of "holding" happening all game but not called until that critical moment. The one called on Vaughn though was, by all evidence, much more egregious than any of the others that weren't called.
Sadly, for BYU, the 8% of inaccuracies and missed calls had to have included the "facemask" sack called on Glasker and a missed facemask of Logan Fano on Ratzliff.