I'll be the first person to say that Kenny Vaccaro deciding to throw his hands up and sit out the remainder of the season (barring a miracle, of course) is more than likely an admission of guilt. I don't know why it takes a goddamn month to test the validity of a failed test result, but Kenny Vaccaro doesn't seem like the type to willingly miss football games unless he's absolutely sure he was in the wrong. For that reason, it's almost a certainty that he took some Adderall and crammed that fucking playbook so well that he could have aced a mid-term on it blindfolded.
That being said, would you be totally shocked if he was just convinced to turn himself in because the Saints brass has less than zero faith in the NFL to get things right? The fact that I even have reason to be skeptical that a professional football player is just accepting a punishment for something he didn't do just so that his suspension doesn't roll over into next season when his employer unlawfully persecutes him anyway is asinine. It's also probably not at all what happened, but asinine nonetheless.
More importantly, this is the proverbial white flag. This Saints defense is a different unit without it's emotional leader. Seeing as they would have to win all their games and pray for more help than Tony Romo's therapist, conceding the availiability of an important member of their secondary is basically a concession of their season. So let's welcome Sean Payton and the boys to the party, because the Who Dat Nation has been drinking through the depression and cheersing to next season for days now!