Shades of BEA 548 as well - pilots either not at their peak, inexperienced or both, poorly trimmed aircraft, both seemingly inexplicably dumped the stick push...
I've read that accident report. Admittedly some time ago.
The aircraft in BEA service had a reputation for false stall warnings amongst crews. The stick pusher activated pretty much immediately the LE flaps were retracted; the "who" or "why" they were retracted was not ascertained.(But was the first direct causative accident action.) The stick pusher was deliberately overridden/disabled on the third push following an airspeed check; it was evidently not considered by the captain that the flaps could be in an incorrect position, or at least, didn't enter his thinking at the time.
No similar check appears to have taken place in this accident at Buffalo. The crew appear to have been taken totally unawares by events.