What is the mystery ? Why doesn't he just come out and say that either did or did not take banned substances? I've seen the speculation that he may have taken some kind of andro laced supplements or shakes that may have given a positive result even though the andro was not on a list of banned substances. He was notified that he had a positive result. If he did not inject steroids , why not just come out and say that? Is he just trying to find out how much people actually know so he can spin an appropriate alibi?
After taking this long, he had better come out with something good one way or another.