ITA that there is shared risk between the characters in the truth coming out. I had assumed it was Ron's drugs, perhaps delivered by Misty with his approval, and the hiding of the evidence done by others...
But as things unfold, it's looking like it has to be more than that. At least, if that is all it was, I expect that whomever gets too far backed into a corner, or the wives, will spill on him, if they can halfway prove it.
Anyway, regarding the bold as a possibility, I'm reminded of this comment as reported from the tapes of Cobra talking with Ron:
Maybe I'm over-reacting, but my jaw dropped at Ron's answer...
I mean, if someone said they had heard about my knocking off drug dealer, the first thing I'd do would be to deny it.
...But Ron's only reply was that nobody knew where he lived...?