I'm not so sure he could have thrown that any different, that is one of the hardest throws in all of football. Good old Pythagoras. He's standing on one hash, and throwing deep out to the opposite numbers. If he lofts it, it's in the air forever, and that space that Foxx has, closes down real quick. That throw needs to be on a rope. The Cornerback, left his assignment, and guessed right, and made the play. That's all that happened. KGun is correct, I think, in that the flaw is that we came back out in the exact same formation. On the sideline, the temple coaches had to have been going over the possible routes and coverages to look for. That opening, for Foxx, was probably there, all week in practice and they probably completed it in practice.
Sometimes, it just comes down, to players on the field, making a judgement call, that gets them out of what they're supposed to be doing, and they make a play.
A play design that would keep that area of the field open, would have the outside receiver running an underneath draw, coming in from the sideline, to draw that cornerback away from being able to make that drop into that space.