It will probably come down to a Barry Bonds* type situation: "I was putting on obvious huge amounts of muscle but I had no idea how it was happening!" How does the HC deny he didn't know where signs were coming from? Someone magically and conveniently produced the other teams signs for every game and he just accepted it?
Some probably knew and some probably were don't look a gift horse in the mouth. Who knows which is which and who is to know which ones actually knew how far things went. That's part of why it will take some time.
Everyone wants a head but it doesn't mean they will get one, at least not right away.
The only thing I could find possibly realistic for this season is a Harbaugh suspension but even that could be challenged by Harbaugh. The process has to play out and that will take time. The NCAA moves at a glacial pace and the B10 doesn't have investigators.
From the article:
Petitti could choose to do nothing, citing the need for the NCAA to finish its investigation, and deal with any fallout after the season.
He could invoke the league’s sportsmanship policy and do something drastic like make Michigan ineligible for the Big Ten title.
Or he could find some sort of middle ground like suspending coach Jim Harbaugh, which would suggest the seriousness of the allegations against Michigan but not prevent the team from pursuing its competitive goals.
But all of those options, and perhaps some others being discussed among Big Ten administrators right now, are problematic.
If Petitti concludes that Michigan’s conduct was egregious enough to forfeit games or be banned from the postseason, he risks being accused of overreach and punishing players who — at least to this point — likely have no culpability in the ethical breach that was committed.
And even if he were to put the punishment on Harbaugh, which might be the path of least resistance, there’s a huge risk in sparking an ugly legal fight that would leave everyone sullied to some degree. After all, nothing so far has connected Harbaugh to
the alleged activities of Connor Stalions, a low-level staffer who was apparently sending associates all over the country to film the sidelines of future and potential Michigan opponents in an attempt to decipher their signals.