That's really cool! First of all, de-escalation is super important, and secondly, I love the idea of using improv to help the mind get flexible for this kind of rapid stress response. Training it for purpose strikes me as important because I know for myself that just knowing a concept in improv doesn't mean I can use it on stage in the flow of things - only if I practice it in context first. And my awareness when practicing gets pretty myopic - I lose touch with some of the other good habits and flexibility when focusing on a new technique.
I hope the class goes well and I am eager to hear how it goes! Also I'm really touched that this is worth your consideration and I hope it's useful for people :) If any questions arise about how to facilitate these games, I'm happy to try to clarify or problem-solve.