Here's the problem - what experience did the TRE/CKA have in the airplane maneuvering the a/c at SS? If he has no idea how the a/c handles how can he program the simulator to model .... what?
You weren't doing stalls simulating the aircraft's behavior. Both Boeing and Airbus have said that many times - 'current simulator modeling does not replicate the real aircraft.' You were teaching the students a non existent world. That can be a huge negative training event.
We used to teach (fake) stalls in the simulator until the training folks realized the simulator wasn't modeling reality.