99 was very legit. Hard to say exactly what happened but he requested his info be taken off. BTW, the Feds are on ALL boards that have steroid advertisers. They know most likely all the sellers both public and private if they're even remotely big at all and have for quite some time. If they are going to bust someone or a board if they can find a way legally to do it as most boards are located offshore and aren't breaking any laws where they are located.
That being said all anyone can do is speculate, the DEA doesn't give info like "we're watching xxx and they will soon go down" that is very guarded and private info only people directly involved in the investigation have so anyone pretending they know who they're going to bust and when is making crap up or they have a very exclusive source working directly with the DEA on the investigation themselves which while possible, is quite rare and would be a big break in the DEA security procedures.