An experienced pilot would not have pulled up to 14 degrees at 35,000 ft and expected the aircraft to do anything but stall. He probably didn't know how the stall warning shut off below 60 knots either. An experienced pilot would have held cruise attitude around 2 degrees nose up, maintained cruise power and got a checklist every aircraft has called unreliable airspeed and saved hundreds of lives.
BUT THEY DIDN'T.