Originally Posted by Lost in Saigon
At 3:12 in the video a passenger with no life jacket slips off the right wing, disappears below the water, and is then helped back up by another passenger. (also not wearing a life jacket)
I think the person actually jumped of the wing on purpose, then realised how cold the water was and came back quickly.
Also amazing is that the first passengers are on the slide/raft just 30 seconds after the plane came to a halt.