Spurrier probably won't get fired unless he goes 4-8 or something awful this year, but he's gonna tank South Carolina. The "2-3 years left" comment ruined him and that program as long as he's there. That's huge negative recruiting fodder for every coach and will be an issue every year until he's gone.
Their overall talent level will slowly decline until they're worse than Kentucky, IMO. He has basically admitted that he doesn't put in much effort now and leaves most things up to his assistants. Can't succeed when even guys like Mark Stoops are outworking you.