Considering GSP left the sport partially because he was against the drug use, I would be surprised.
The whole Jones thing seems odd to me - something about the timing doesn't fit. Looking forward to some clarification about the whole thing.
Timing is everything actually.
His only angle now is to say he was "Set up" and that it does not make sense to have passed one test and failed another in such a short window. "Someone dosed him between tests as it makes no sense to take an oral Steroid after the first test as it only helps during training"
This is to get a story out to the media and the common folk who do not understand PED's.
The same way Hendricks continually hedged on VADA, and now legions of idiots believe the story that GSP was ducking Hendricks testing. When in fact, the day after Hendricks said that GSP agreed to do BOTH forms of testing if Hendricks would too and hendricks declined. That gets lost in the zillion articles though except for by diligent truthseekers. It is just Jones camp trying to place a seed of doubt to the common fans who do not understand the situation to salvage whatever they can of this mess.
But to the commission and USADA testers it makes perfect sense if his masking agents failed.
Masking agents have a very short window of detection. But timing is everything and using them at the right time will both mask the Steroid and for slightly longer than the half life of the masking agent.