RAT 5
Your SIM instructors are not properly briefing pilots before conducting the exercise. There is a difference between terrain avoidance maneuver and TCAS RA. The pitch change required to fulfil RA demand is maximum 2 degrees in cruise,While it increase to between 5 to 7 degrees at speeds below 200kt. It is calculated at normal handling inputs.If the pilots knew this they wouldn't pull back harshly on the controls. If there are multiple threats the RA reversal can take place. So just pulling or pushing to its limit in one direction can compromise safety.