Of course not, because that story would never fly with anyone who did not WANT to believe it. What he took would NEVER be given for healing a leg injury. It was used for cholesterol. If Silva was using to heal up he would have taken very different steroids. In fact it would be counterproductive gaining muscle mass with the bone not healed since it would increase the risk of re-injury.
I overall agree with you .... I even want Anderson vs Chael 3 and have started a thread on it a couple days ago.
I didn't follow the situation enough to know what kind of substance he used and I bet allot of others didn't either. Even if what he got popped for isn't what is used for that type of injury it is a believable excuse as any other. Since all excuses suck.