He mucks 99, tilts for about 10 hands then chills the fuck out; playing fairly tight slow drip-drip stackoff, I think he loses another $40 or so.
I dont see why you'd call this. You're making good money off him. He may have crap, or he may think this is his chance to get all his money back with AA. I'd fold and keep taking his money the way you have been.