Stall confusion
Let me add to the confusion. No one seems to have an answer as to why the plane zoomed up to 38,000 feet. At that time also the report mentions that the auto-pilot also kicked off. Thus the plane was in Alternate Law which to me means the only control of the plane was pitch thru the electric trim, and roll via the side stick which controls the rudder.
Once the plane was in a deep stall at low speed I don't know if the plane would respond to any flight controls. (I also don't know what the stall characteristics of the plane are)
If any of that is the case, then the pilots were simply along for the ride.