Like I said he is probably running some other popular gear that MMA fighters prefer, like Drostanolone, helps increase test and aggression but not necessarily muscle building.
They are running a bunch of peptides, even if off androgens. Problem is, nothing is as effective as steroids. Drostanolone and the like is high risk stuff, easy to get caught.
As far as testosterone, if test ratio is suspect they should be doing the isotope test to see if there is any synthetic test in there. I don't know if they are or not but I don't think they really want anyone to fail, they just want reasonable deniability, to say they are trying to catch the cheaters.
Contrary to popular belief, with the testing available today, it's very hard to do steroids without getting caught - if someone really wants to catch them that is.
I'm pretty sure that evidence he cane off gear. Either he stop Working out and training.. Or he aged 25 years in the pics. That's the only explanation for that kinda of change if he was nature.
Definitely not on the same stack, but definitely still on drugs. Not saying that because of the way he looks but there is some potentially undetectable stuff... and they will do whatever can give a little edge. HCG, triptorelin, igf-1, insulin, GH, GHRP's, microdosing EPO, stuff like that. Even things like Viagra that might give a little edge and aren't even banned.