Generally, I have only met NICE quilters and opinionated non-quilters, but I would have had the tendency to tell this man to bite my backside. But you did good, just going to your car. A much nicer response than my instinctive one, and and a whole lot less friction caused.
You were definitely the bigger person.
By the way-
Your quilt is fabuously gorgeous, I would love to learn how to free motion feather.