Isn't he sick since september 2015? I heard he had problems with his blood glucose, because of overworking, but that was one year ago.
I only played Deadly Premonition. It wasn't a bad game, but it wasn't great ether. It had potential, but it surely had budget problems. Too bad that the world could not see more of his games. Many developers have problems to be big again, when they leave the company which made them famous.