Considering the report on what happened, it certainly sounds like something happened... maybe something like a heart attack, that made him go under. There he was swimming along fine and just went under? Sounds very odd.
It's very sad indeed... only 28 years old... very young.
I recently read someone's race report on BT about their HIM experience up in Lubbock (BSLT?). I'll paste it below. But gosh, I can't imgaine if something like this happened to a weak or scared swimmer. You know?
One of the things I love about this sport is the fact that most everyone plays by the rules. About 300 yards in I came in contact with someone who maybe isn't such a good sport.
At first he was sort of pawing my right side and shoulder trying to pull past me. I'll even say the grab to the goggles that flipped my goggles inside out could have been an accident.
But when he stuck his hand inside the collar of my wetsuit, choking me, yanking my head out of the water, and then pulled me under I lost my d*** mind and mauled him. I got on his back, held him under water and gave him a little of his own business before I pushed him under my legs and went on my way.
I'm not proud of it. I shouldn't have let some idiot throw me off, but I considered what he did to be far beyond what one would normally expect in an OW swim. I know there's always contact, but this was malicious in my opinion, and he grabbed the wrong guy. If had happened to me before I was a comfortable OW swimmer my day might have been over at that point.
"Life is not a journey to the grave with the intention of arriving safely in a pretty and well preserved body, but rather, to skid in broadside thoroughly used-up, totally worn out, and loudly proclaiming: WOW WHAT A RIDE!!!!"