Taking this one stage further from Owain's analysis etc. isn't it now likely that Airbus (on behalf of BEA?) have simulated the 330's recovery from such a fully developed stall attitudes and trajectories.
If the speculation that Airbus really intends to test-fly such a profile at some point holds water,.then they must be very sure that it's doable. A tail chute might be a consideration, as some of the early T-tailled test aircraft had to start using here.
I would think a fairly good dynamic model of stall recovery has been attempted and the likely recovery profile, loads and altitudes known - which will hopefully feature in a report one day.