It appears that the flight deck crew was monitoring the changing weather conditions and thus altered the flight path, that the initial problem was the failure of the speed probes which led to the disconnection of the autopilot and the loss of the associated piloting protection systems, and that the aircraft stalled at high altitude. It also appears that the flight captain quickly interrupted his rest period to regain the cockpit. The crew, made up of three skilled pilots, demonstrated a totally professional attitude and were committed to carrying out their task to the very end and Air France wishes to pay tribute to them.

http://www.aviationnews.eu/2011/05/27/air-france%E2%80%99s-reaction-to-the-bea-s...