Nobody knew he was a single time user until he was caught doing coke in a car with his buddies. It might be unknown, but that's not the same thing as its not being an issue. It shouldn't even be in question, frankly.
"[Cocaine] is something I hadn't really done in the past, so it's not like there was ever a drug problem," Jones told the Times-Union. "[The incident] was something where I was with some of my buddies. It was a bad mistake, bad judgment on everybody's part."
I've razzed you about Matt Jones in the past, but I do see why you like the guy. I do have to say that his quote above on the topic doesn't make me any more positively disposed to having him on the roster in place of a current, healthy player. He's equivocating about whether or not he'd tried coke previously, disputes the notion that he's got a problem with drugs which is patently wrong since drugs are at least partially responsible for him being currently without a team, and then deflects the bad judgement by spreading it to everyone involved in the arrest. Granted, there's some pop-psyching going on on my part there, but that's not exactly the attitude I want to hear from a player on the road to recovery.