Sensed accelleration such as described by the pilot flying in AF 447, would have been a worse than useless perception.
The aircraft was nose up and the pressure being sensed in the back by PF was misinterpreted as possible overspeed...somatogravic disorientation.
The false sensation was then mistakenly responded to with persistent pitch up commands. The pilot seemed anxious and reverting to sensory habit rather than his training.
This aircraft was being hand flown without reference to the pitch aspect of the artificial horizon, and without reference to the altimeter or VSI in the phase leading up to stall.
No sense perception other than what he could see on his primary scan indications was of any use at all....
ps. I am also quite fond of the Categorical Imperative... when in doubt, duty alone will often rescue the day.