Whisper, I respectfully disagree. I think its even possible that he did flip before he was killed - the cat in "Made in America" could have symbolized Chris being a rat just as easily as it could symbolize the re-incarnation of Ade or Chris.
One line of thinking: Why shouldnt he flip? He could continue writing, do something he actually enjoys doing, hang around people he wants to be around (show business people), and still have a family. In reality, he would have been better off flipping when Ade asked him too, and I think he realized that by the time of his death.