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From NTSB initial findings :
The stick shaker and stick pusher activated (at which point the autopilot would be disconnect at the very latest), then the airplane pitched up to 31 degrees nose up, then pitched down to 45 degrees nose down and rolled left to a bank angle of 46 degrees, then right to a bank angle of 105 degrees (already 15 degrees upside down). The airplane experienced G-forces between 0.75 and 2G.
From Canadian Transport board report :
The roll angle increased to 64º, the pitch angle went from 15º nose up to 5º nose up, and the aircraft vertical acceleration dropped to approximately 0.5 g. The aircraft pitch then increased to 30º nose up briefly before decreasing to 40º nose down. These conditions are indications that the aircraft wing had fully stalled.
Different circumstances but very similar description of stall characteristics.