I never met the man but I read about him some. Definitely a little out here. Supposedly he worked a shift or two each week as a busboy in a restaurant to keep himself grounded. (which to me would be a good thing)
the Rolling Stone piece I read was titled 'beyond comedy' and purposed he was really one to push the envelope.
faking death and disappearing sounds like something he might conceivably have done. wherever he is, I wish him well.