As mention above, there are new reports that the body of the aircraft is lying on its back in 30 meters of water.
Bodi Air Asia Terbalik Tampak di Kedalaman 30 Meter | -nasional- | Tempo.co
(Use Google translator if you're not fluent in Bahasa).
Although I'm not suggesting for one minute that the aircraft rolled on its back and stayed that way until impact with the water, but just how easy is it to correct a roll in the A320, when it has flipped on its back?
I understand in normal law, there is a 67 degree limit on bank angle, after which it will correct itself. But will the computers revert automatically to direct law if an extreme unusual attitude has been encountered? (Not wanting to start a debate about Airbus automation, but just genuinely curious).
And it's been reported that one of the bodies retrieved was wearing a life vest.