I think it’s really hard to ‘discuss’ anything, with anybody, in the middle of a ride. At best, the people you’re talking to are distracted. At worst, you’re being very disruptive to everyone else.
At the moment your life is flashing before your eyes, you generally only have time for a short “Look out!” or “Coming through!”, the verbal equivalent of leaning on the car horn, to alert the other rider(s) to the dangerous situation at hand. After, with the adrenaline still rushing, is reeeeally not a good time for either party to attempt rational conversation.
To me, it’s going to be a lot more useful (not to mention tactful. Unless, of course, you don’t care if you get ‘that’ reputation.) to give staff an FYI once you’re all unmounted and to also seek out the jr/GM for a brief talk. It’s not difficult to start the conversation with a “Sorry I spoke so sharply–do you realize why I did it? I was very concerned both of us could get hurt.” Also, from your various comments, it sounds like a number of things from the outing are bothering you. It might be considerably more productive to quietly seek clarification of proper etiquette from a staff member and ask if a reminder can be provided, if needed.