If nothing else I think you would have been justified in asking, "Why didn't you tell me we were breaking the precident and doing a scenario?"
In my quasi-scientific observation, Mini-games attract only a couple of key personality types, of which man-child is by far the most common. Obsessing over the rules of a trivial system (by big picture human lifecycle terms) also tends to attract the most Vogonistic members of society. It seems like your former friend was an overlapping venn diagram of the two. I'm sure there is motive that you didn't mention or are unaware of, but that really doesn't justify a grown man throwing a hissy fit because he didn't get his way.
Like the rest, I would suggest putting him in your rearview, and letting him devolve into a friendless forumtroll. If you want some new opponents, why not come up to Dragon's Lair Weds nights? There's usually a dozen friendly, competetive players, and about as many noobs (myself included) that could always use another sparring partner.
lol.