Bernd
I realize it was in a simulator, and I agree unrealistic in real flying.
However, something happened very quickly when they went from a positive rate, to level, to a high rate of descent.
Early in my 737 career, we did approaches to stalls in the airplane, and flew them well into the stick shaker. No one ever went so far as to complete the stall to a break, but it was always interesting.
Regards.