The man practices chocking other people to the brink of death in some sort of pseudo-BDSM tournament. What sort of sanity comes from a hallucination induced by oxygen deprivation?
You immediately associate Brazilian ju-jitsu with BDSM and he's the crazy one!?
I think you'll find that after attending one or two sessions of BJJ its not as crazy or sexually charged as you're assuming it is.
It really speaks pages that the first thing comming to your mind after hearing about BJJ is BDSM tournaments, and that it stayed the only thing long enough for you to reply that.