Dead naked surfer with apparent shark attack wounds washes up near San Diego

Strange

http://usnews.nbcnews.com/_news/2013/05/09/18150785-dead-naked-surfer-with-apparent-shark-attack-wounds-washes-up-near-san-diego-beach?lite

Sounds like a suicidal case from the facts in the story: "Beyond the alarming prospect of a human-eating shark prowling the San Diego coast, other unusual factors raised questions about the case. Everhart said the man may have had an unknown medical condition or may even have set out to kill himself.
The man was naked, and there were no signs of a struggle, authorities said. His wetsuit had been carefully tied around the surfboard; neither the wetsuit nor the board showed any signs of damage when they were found well offshore.  Everhart called it odd "that someone would take their wetsuit off while they're out at sea and then tie it around their surfboard and then disappear."