If this happens, and it is the violation it appear to me to be, then it will be worse later when everyone shows up in those t-shirts, than if it is nipped in the bud now.
If it is reported one of two things is going to happen.
1. The NCAA says it is not a violation, and the project can proceed with no issues. I was wrong. And it is a good recruiting thing for BYU.
2. The NCAA says it is a violation, and it can be nipped in the bud before it becomes a bigger deal with bigger consequences.
Either way, clearing it with the NCAA would be the best route imo.