In Rimfire Sporter you are not allowed to use shooting coats, shooting gloves or other aids of this type. You are allowed to wear the maximum of two sweatshirts and a work glove. This is to keep the expense down and make this match affordable to anyone who has a .22lr capable of meeting the match requirements of being below 7.5lbs and having a trigger pull of more then 3 lbs.
I do not believe RSO did this out of maliciousness and I don't think he realized how rattled our interaction would make me. I believe he was a poorly trained volunteer, that had the misfortune to do what he thought was correct.
Thank you for the explanation and congratulations on your win.