So he was just sleeping with somebody elses wife and the local media guys couldn't report this...why? Doesn't rate as a reason to be so hush hush. Gossip is publishable.
There's still more to the story. Either the shield, some sort of cop shop or the government is keeping people quiet. At this point if the Bears wanted the story buried somebody would've laughed at them and just ran it.
Maybe it is the old joke ...
the young bull frantically tells his dad, "Dad, dad, let's run down the hill and **** a cow".
His dad responds, "No, son. Let's walk down and **** all of them (players' and media members' wives)."
That would be the only explanation for the media being averse to reporting it, knowing that, if they report on him fucking someone's wife, all of the reporters would report on Alan fucking his wife.