Thanks for the support and the suggestions. I'll let you know what the prez says (I haven't emailed him yet- I wanted to cool down first).

The guy is not someone you can talk to. He is a very weird guy, just completely full of ego. I did tell him before we started riding that I had a knee injury, was taking it slow, and could not do significant hills. He obviously didn't care. When he heard I was hurt and angry, he offered to push me up one of the hills going back, and seemed angry at ME when I refused...but by that time the damage had been done, and I was honestly afraid of punching him if he got near me.