As I read the letter, first they're going to stop providing faculty evaluations, and then they're going to set up a bureaucracy overseeing student-developer use of university resources. After that, they may or may not reallow the app, but as the letter points out:

> Just this weekend, we learned of a tool that replicates YBB+'s efforts without violating Yale’s appropriate use policy, and that leapfrogs over the hardest questions before us.

Not a huge victory for the students here. :/