I really don't get all the angst about this long-sleeved shirt - well, at least all the angst from one person. The NCAA is the governing body. They make the rules. It is also within the scope of their power to make exceptions to those rules. That's what they did. So what's the big deal???
Here's another example...I do not allow my students to wear hats in my classroom. The kids know this and take their hats off when they come in. Last year I had a 13 year old student who had to go through chemo and radiation treatments. She lost her hair. When her mom called and asked me about wearing a hat in class, I immediately said yes. See, it's my rule and I made an exception for that particular case.
So I ask again...what is the big deal?