Stoops got to town, hired an offense and went out to find a quarterback. If it hadn't been Heupel, he would have gotten someone else. Listen, they're not that easy to find. Good quarterbacks are rare. America is full of guys who can throw and run a football.
Good quarterbacks are everywhere.
Good coaches, too. Just because OU couldn't find either one doesn't mean they're in short supply. Kansas State can't find anyone to replace Michael Bishop. OSU is dead without Tony Lindsay. The guy was going to Utah State, for goodness sakes.