So the NFL is frustrated with the NFLPA because they DARE to ask to see evidence of such activity that they wish to punish the players accused and lambasted in the media for; of which, the NFL has refused to reveal said evidence and is taking the "just believe us because we're infallible" approach.
Earth to NFL: You can't even begin to attempt to win any arguments when you're being just as big of a "jerk" as much as you're accusing the NFLPA of being.