The big mistake was USC calling a timeout before Texas' attempt of a two point conversion. Those two points weren't worth the price of a timeout when only 19 seconds are left.
My only thought is that maybe Carrol that that losing by only one might still give USC the AP championship.
That was a bad call. They gave up a lot by that one. I was fine with going for it on 4th down. White was killing the Horns all night and if he makes it, they can run out the clock almost. Do what you can to keep the ball away from Young.
In the end he proved why.