It always amazes me when ever I see experienced pilots nose up in a stall. Unless you know EXACTLY what is happening with the aircraft (speed, orientation, lift, flight controls) to 100% certainty, your first instinct should be to nose down!
Stall?, the thottle is your friend.
The crew was receiving totally erroneous air speed readings and should have recognized this and disregarded the readings. I have lost my airspeed indicator twice and simply flew my aircraft by attitude.
The accident happened at night and the pilots had no visual reference to the horizon. They had at least two artificial horizons that were working perfectly by which they could have flown the aircraft safely. 100% pilot error was this crash.
From what I read the copilot who was at the controls at the time was a less experienced African, possibly affirmative action.