BakoSaint

Some other possibilities come to mind. Maybe Haener got busted for some obscure thing, like if I remember right Garrett Hartley got busted once for taking adderal to stay awake on a long drive. I would like to think that would be a 4 game suspension not 6 but who knows. Maybe there are ways to get from 4 games to 6 besides the specific substance, like evidence a player didn't cooperate or appeared to try to hide it in some way or was late for their test.

Or maybe Haener took a recreational drug at a party and tried to cover it up with some trick he learned in college to dilute his urine or get a bag from a friend or something, and the NFL was able to determine that his sample fraudulent. They might have called him in for a second test but weeks later and by then he was clean. In the event of a fraudulent sample the NFL can't really know if what was being covered up was performance enhancing or recreational, so perhaps if performance enhancing is more serious it would fall under that in the event of a fraudulent sample.

I think something accidental from a supplement is possible too, just bringing up these other possibilities.