The BEA report places emphasis on the point that the unreliable airspeed lasted for no more than a minute. However it was in that minute of understandable confusion that the major upset occurred.
The big question is whether the flight crew where then already locked in a trap of no escape or did they miss a trick? As this is so far beyond the envelope of simulators, it is a question only an Airbus aerodynamicist could answer with any authority.
I cannot help feeling that the strong implication of inappropriate control input (in the later stages of the incident) from the PF may be misplaced if pitch and roll authority were all but gone and we know so little about the response he was getting to his inputs.