Oh, I believe he did it. He may not be technically guilty. And, if I were on the jury, I'd have to give him the presumption of innocence until he was proved guilty beyond a reasonable doubt, since that is the legal, not the moral, requirement.
However, as a person forming an opinion based on the only information we have yet, I believe he is dirty as sin. I may learn stuff later that changes my mind, but right now, he's got too many folks saying he was doing drugs, including an undercover cop.