It is rather convenient that Harbaugh comes in with a splash, but basically plays second fiddle to OSU for his first 4-5 seasons, then all of sudden they turn the corner and beat all their rivals. He has been caught cheating at least two other times.
Sign stealing is huge. If you know what play is coming, even BF could coach his way to victory there.
So, I wonder how long this has really been going on, and I bet at least 2 years.
Also, also, the one coach theory is dumb. For this to make any difference, at least one person has to study the opponents signalers AND then relay that information to their playcallers to defeat the signalled call. By definition you have a conspiracy here, gents.
"Did not know" was not a defense for Sean Peyton and should not be here. Harbaugh should be gone.