oldengmkr
The A340 scenario, with a zoom climb resulting in decreased forward velocity followed by a deep stall, with perhaps even a tail down fall to the water, fits the roughly known envelope of AF 447. There does not seem to have been any aspects of this irrefutably rejected by the responses and counter comments provided to date in this thread - or did I miss something?
I posted a reference to a simulator demonstration last year with this same type scenario, and in the intervening period, no one has absolutely refuted it as a possibility other than asking how the airspeed could increase with a blocked pitot. I believe once that was explained, there were no further significant reservations. The one reservation some of us have with this scenario is that you would expect the Rudder Travel Limiter to be set at a different travel than found unless some remarkable coincidences occurred.
I hope by tail down you mean a slight positive pitch attitude relative to the horizon, not a tail slide.