Part of being a competent coach is having you players ready for every possible scenario, of course they are going to do the unexpected.
But also, does BYU not self-scout? It should be pretty easy to look at your own defense and understand glaring weaknesses that future opponents will try to expose.
Not being able to stop the run against a bad team like USU is the most embarrassing defensive performance in a long time. Completely uninspired.
I think the last time a BYU DC got fired it was after a crappy performance against Utah State, just sayin’.