“Clearly his death was auto erotic asphyxiation.”
Ever since David’s appearance in “Kung Fu”, he has been obsessed with the martial arts and the Art of Zen. This is not so weird or sickeningly disgusting as most are want to believe...he just got carried away with it. Perhaps he was practicing becoming a Buhdist Priest mummy?
http://www.sonic.net/~anomaly/japan/dbuddha.htm
You'd think at his age, he would have found inner peace of some sort. One would hope.
Still, his manner of death looks like homicide to me.