One of the most frightening and unique generated sounds in a cockpit is the death rattle.
Add the fear, fatigue, disorientation and hypoxia factors to a host of contradictory information then the brain prioritizes.
..........
The body tenses with stress and fear and primeval instinct is to wrap oneself up in the foetal position - which could have resulted in the PF inadvertently putting a nose up input on the stick while he was sorting out the roll and what was really happening.
That kind of analysis is the last thing I would expect to see in an accident report.
The crew deserves a more thorough analysis