It wouldn't surprise me if Corbin went somewhere else and found success. The Jazz job was never an easy coaching position.
I've always said I don't have enough to judge him on. He's been extremely limited without any players who can force their will onto the opponents. The reason he has my support is because the advanced statistics from mysynergy prove beyond a shadow of a doubt that he squoze every last drop possible out of the Mo-Al Lemon on the offensive end. There's virtually no argument you can make against his offensive systems using advanced player stats.
Between that and how he's proven to read the competencies of young players, and thus be able to bring them along at the perfect place, tells me he just might know wtf he's doing. But again, the jury will be out until he can coach a squad with at least one dominant player.