the sign stealing operation of OSU & Rutgers is even more extensive than Stalions.
The information collected appear to have shown the corresponding plays as well.
Now, here is where it gets dicy
@Section_6 may explain this clearer than I.
When Intel is received, the continued collection of that Intel must establish a pattern in order to establish a response.
In other words somehow the operation OSU & Rutgers had was more aggressive individually or possibly combined.
This establishes an ongoing operation to bring Michigan down.
Then if OSU & Rutgers discovered what Stalions was doing. It is safe to assume by getting the league upset about Stalions antics. Using this they could get rid of Harbaugh who is their pain in their buttocks.
Stalions may have learned what OSU & Rutgers was doing, he then, he began his own clandestine operation to protect his boss, Coach Harbaugh
Just my 2 cents.