Let's not forget the props being brought up to high RPM, but both pilots didn't bother to check for the airspeed drop off that is always associated with that action.

Then, pulling back in the stall... which is what Pinnacle and Colgan taught at the time. "Don't lose altitude!" 4 years earlier the Pinnacle 3701 accident the pilots did the same thing at 41,000 feet... the shakers fired and the captain (who also originated from Gulfstream just like the Colgan captain) hauled back on the stick.