The NFL already has interviewed more than 40 people associated with the Cheats. I think they already know who did it, but now they are trying to be certain that what he did isn't against the rules as written. In other words, perhaps the Cheats filled the balls with helium, a gas that would have contracted more than regular air by the time of kickoff. I don't think there is a rule AGAINST using helium, so what then? Or what, as one scientist hypothesized, if the filled up the balls in the sauna room, where temperatures can be fairly extreme on the high side? And then they took them out to be checked by the refs? Again, not against the rules although morally and ethically suspect.
So, the NFL has a huge problem on its hands, especially with one CNN writer saying that the Pats should forfeit the game and let the Colts play in the SB.