OU massively underperformed that year and had a string of critical injuries that didn't help.
They entered the game with a struggling offense and no one that could reliably throw the ball. They basically ran a wildcat offense the whole game. Texas stacked the box and dominated 49-0.
BYU is overdue for a blowout rivalry win. This is the best opportunity for one that they will get. Utah won't stay this down for long. Too many advantages over the rest of the conference.