I have been on Reddit for a long time and I have been an on-again, off-again subscriber to /r/cfb over the years. I don't recall a specific fan base ever being treated the way you are currently treating UT fans right now. I don't understand how there isn't at least one mod that said "hey guys, maybe this is too much". To say nothing of the fact that what you are doing is a clear violation of the Subreddit's own rules:
2. No flamebait, personal attacks, or harassment -Flamebait is any post that is designed to get negative reactions from a particular user or fanbase. You might also call this "trolling". -Friendly ribbing and trash talk is part of sports fandom, and is fine. This can be a narrow line sometimes, so if you're not sure, tread carefully.
Do you really think that the way you have the subreddit right now is going to encourage anything positive towards UT fans? Do you think you have made the subreddit welcoming to UT fans? As mods, your job is to make sure that people are able to enjoy your subreddit, not to alienate people from it. I don't care about banter in threads, that's fine, but to go our of your way like this to publicly humiliate a specific fan base, especially when no one can seem recall another fan base being treated this way, is totally unacceptable. I don't really care if you change the sub theme back, there was a time that I really enjoyed the sub and participating in it, however it's been a very long time since the sub has been fun and this pretty much killed it for me, I won't be re-subbing. I am very disappointed in the way this sub has chosen to treat a segment of it's user base, you owe UT fans an apology for this stunt.