According to his wife, yes he did. But that still doesn't say exactly why he killed himself with no note. The fact that these high profile deaths have been hanging from door knobs and NOT hanging from the ceiling shows that they really didn't intend to kill themselves. Our survival instinct is strong. If you're trying to kill yourself by sitting on the floor it's going to be pretty difficult UNLESS you're distracted by the need to orgasm.
tie the rope to the doorknob, throw it over the door and noose it on the other side.