If the alums threaten the Regents with a reduction in giving, they'll offload this guy. Tenure or no tenure, he's gone.
He's just a blowhard that will sell his soul for attention.
They may have to pay him for a while, but I'd put this guy in an office all by his lonesome for a few years, having no teaching schedule or access to students. He'll probably sue, but let him. He's a vile creature.