It strikes me that it would have been very difficult for Carradine to tie off his own genitals, then thread the rope around a closet bar, and proceed to tie it around his own neck in a manner that would cause a "hanging".Think of the logistics of that.Impossible.

But isn't possible it was a kind of sexual-technique gone wrong?

There's only one legitimate place I've found to see the real photo and a video of it, the rest seem like scams :-/ You can see it over here though: http://vostuu.com/carradine.jpg

They make you do a little survey but after that it's good to go

He was practicing a Kung Fu technique known as "Tie the Grasshopper down and the eagle will fly"