The more I read, the more it's clear he got railroaded by the NFL here. He tested positive for a masking agent, not a PED.
The levels in his system were way low and in order for the drug to be an effective masking agent for PEDs, it would have had to have been much, much higher. Quinn's team was able to provide expert testimony, apparently, that backed up this claim as well as the records from the pharmacy that shows the pharmacy filled the masking agent prescription for another customer immediately prior to pulling Quinn's seizure medication.
The attorney also ripped the league's attorney as well in the statement.
What a joke the NFL has become when it comes to this stuff. This is a situation were maybe they should take into account the history of the player here and give him the benefit of the doubt since Quinn, to my knowledge, has never failed a test before in his career.