Chase888 (Post 1061) has "losing the crew" been considered?.
If that had occurred at altitude the cockpit door wouldn’t have stopped the decompression and the aircraft in all likelihood would have rapidly developed an unusual attitude leading to break up or water entry at high speed.
However, the crew being partially incapacitated is more than possible in a Airbus with side-stick if the crew are not wearing their harness or it’s only loosely fastened, i.e. a control yoke is as good as a zimmer frame, you can grab it and it will normally catch your legs before you hit the overhead panel.
This might be a possible answer to the injuries on the recovered bodies, i.e. they were either moving around the aircraft or had their lap-belts unfastened when they encountered unexpected turbulence, their injuries may have been so severe from this that they never made it back to a seat to strap in.
When the aircraft hit the water it may have broken in 2 or 3 large sections, anything loose in the cabin being ejected through the open end as it sank.