Okay... well, that small picture wasn't that good.
If you look at the larger picture, you will see the Genoa is completey shredded to bits! Holy cow batman!
That blows the other theories out of the water and points to a more "rough weather" answer as to what happened. Also the dinghy is still there, visible in this picture hanging off the transom... so it takes my dinghy theory out .
The heaving line with the emergency rescue float is still attached to the starboard quarter as well, so points to no rescue attempts to save an MOB.
There's big sag in the forestay, and the main looks like it's out all the way. That suggests they were running or at most on a wide broad-reach. ... My guess is as good as yours, what do you guys think?