Actually you are wrong there. I read that part of the legal pdf.
The CBA clearly and legally gave them the right not to inform any of the players and yet still hold them responsible for what goes into their body.
That part of the issue could not be challenged legally.
(While I dont agree with that professionally or morally thats not whats at issue).
The only part that can be chalenged is the that the NFL did not follow MN drug testing laws.
I see how that can exempt 2 guys from MN, but I see no rational reason how that can exempt 3 guys from LA.