We have spoken to CFM regarding a sudden seizure and they say it is possible and has happened in the past (although rare).
What I get frustrated with is this idea that the sim is different to the real world and "I did that because it's the sim". What people need to understand is that when we train we are trying to build competence, knowledge and understanding. This means that the limitations of the sim should be briefed and understood and the techniques used in training are taken forward into line operations. Giving someone advice "for the sim" is not always the best advice.