Well, his hands were bound, so now there's speculation it may have been some sex kink gone wrong. You know, after all these years I hoped he had put all that crazy stuff behind him. A damned shame....he had a lot of diverse work that I always enjoyed.....and Kung-Fu was the serious joint! (as we use to say back in the day).
On a side note: In the biography of Bruce Lee, it was claimed that the original idea for Kung-Fu was by Bruce, to star him. But the studios at the time didn't think America was ready for an Asian leading man sportin a superior fighting style...and essentially ripped him off.
Still, I'm a big cult fan of the series...and Carridine did a great job. (imho).