MSU wants answers. Understandable.
But here's the thing: this isn't a Michigan issue, and that's probably why the story disappeared.
Stalions wasn't at CMU because Michigan wanted him there to scout MSU. He was there because someone at CMU wanted him to help them against MSU.
Why CMU has not yet had to answer who that is, how Stalions got on the sideline, why he had official CMU gear, etc, I have no idea. But the truth is it's just more proof of Stalions "going rogue" and doing his own thing outside of Michigan's knowledge.
And, if you look at this act as just that, a single act, well the punishment for this would not be that severe, there is precedent. With Stalions already no longer employed there really isn't anything to do.
I am not sure if we will ever hear more from CMU, or if the NCAA will ever comment on it, but its an MSU and CMU problem, and that's why no one seems to care any more.