You should be able to play frisbee with an (unloaded) 1911 (original, A1, Series 80, whatever) and unless it lands on the hammer, it shouldn't drop the hammer.
You are STILL forgetting about firing pin momentum.
Excellent instructional pics. Hope you didn’t have to sacrifice a gun to get them. The incident in question involved a Kahr P-40 per a gun forum which surprises many as they have a trigger block safety. I suspect something got in the trigger guard.