I have no idea who was targeted. But I do think if the facts play out anything like what the lawyer has suggested they would have a problem on their hands.
To your example, of course you don't have a defense to that because of the impracticality of one cop pulling over 4-5 different people at once. But if law enforcement goes and breaks up and underage party and lets all the athletes go but writes all the band kids tickets, do you not think they'd have a problem on their hands? It comes down to selective enforcement aimed blatantly at a certain group of people.
There's no practical reason why you'd charge Dekkers, Enyi, Sauser, Ulis, etc. and not charge the fellas down at the frats who are doing the same thing. I'd be amazed if they could not, with some level of diligence, bring these same charges against hundreds, if not thousands, of other non-athletes.