Once watched a Lightining whip the wheels up too quick after take-off and settle back down with the reheats blazing. It dragged the jet pipes a long way before finally lifting off with fuel streaming out of the belly tank on fire. It happened several times with the Lightning, although most of them stayed down. The aircraft behaved normally for such a round bottomed aircraft and I believe everyone just stepped out at the end. The sea is pretty hard if you hit it at speed and I can easily see how it skimmed the surface and ended up on the water without breaking up. The rest of the accident report sounds plausible as well. The only unusual thing here is that there has never been any sign of the body.