Well, an absolutely great chest.... yummy in life AND death!
Looks like this oddly misguided dude decided that a good and efficient way to go was to swing a running chainsaw around his head, and sever is own spinal chord. Well. Points for creativity, for sure. Never quite seen this one before!
I suppose you could also assume it was a bizarre attempt at a quick death. Sever the chord, you're an instant "goner." That said, perhaps if he did die instantly, and the heart stopped pumping, there wouldn't be a resultant post-mortem pool of blood at the scene....