First of all, "PULL" is TAUGHT as a partial in approach to STALL. It is a version of "Maintain Altitude".
Secondly, on the PFD already was ALTERNATE LAW in AMBER. Piloting an a/c in the conditions 447 found herself takes more than second grade reading skills.
Failing more data, I will never understand the PF's actions. Never. Without context, and perhaps there is none, all that aft stick is bizarre. Equally mystifying is the utter lack of "conversation" on the flight deck. I do not believe it was so, there is more to hear. If wrong, I will apologize in time. The Human Factors group is stuck with the hot potato, No? To make conclusions, they will have to support them. In this support I think more shall be revealed.