We always pull off the trail to let others pass too. Mostly because our trails just aren't wide enough. You just never know what another horse is going to do. But I wouldn't pull off in a mudhole just so somebody with ants in their pants could pass either.
It looks like your buddy from the IT ride has posted a rather pointed comment on the NATRC4 board this morning. It'll be interesting to see what the reponse to THAT will be. ;o)
Really, I haven't even been over there in a while.
Becky