That playsheet of signals is very very very bad for them
Northwestern had a whiteboard with hazing tallies. In the locker room. In plain sight. Coaches claimed to not have a clue about any of it.
We currently reside in a world of very different norms than we used to ten years ago. That playsheet is as clear as day in those pictures, but Harbaugh and the coordinators will deny deny deny and nothing will happen. This is me being cynical, yes, but we have seen people in the public eye for many years now say water isn't wet, only to say ten minutes later they never said water isn't wet. And for the most part they're not called out on it.
It's the stupid times we live in. Harbaugh will claim he doesn't know anything about it and the NCAA, Big Ten and University of Michigan are going to say "Well, he says he didn't know."