Long term member of Narcotics Anonymous here, and still very active in NA. I have never heard of "powder" as a reference to anything except powdered cocaine, and I regularly hear it as a reference to powdered cocaine. This is as opposed to crack. People will say they did "powder" as a means of telling you that they were not a crackhead (of course, a lot of times the person telling you he/she did powder--they are a crackhead, because as far as I can tell, hardly anybody does powder these days.)
I believe Tommy when he says he wasn't really into cocaine, because he has all the marks of an opiate addict. Opiate addicts are much more functional--for a few hours a day anyway--than crackheads. He says he was more into pills (opiates) and I believe him and it jibes with what Lindsy seems to know of him and what they were busted selling. That doesn't mean he never smoked crack.
One thing about an opiate addict: They are not known for committing sex crimes. In fact, they aren't known for caring much about sex at all. Opiate addicts are also not known for violence. They're known for cowardly thefts and things like that.
A certain percentage of males who use cocaine apparently are into sex while using cocaine. Regarding another drug that I don't know if they used must be around Satsuma--meth--apparently some male meth heads are into sex, and meth is also very much associated with violence.
None of this leaves us anywhere. I mean, it does leave me feeling certain that if Tommy committed a sex crime or took part in violence, he was using some other drug than his drug of choice, because based on what I know of his drug of choice--and I know more than I'm going to go into here--a sex crime or a violent crime does not fit the profile of an opiate addict. This type of crime does not fit the profile of a crack head or a powder head either, but more likely than an opiate junkie.
Joe Overstreet is an unknown. I don't know what drugs he likes or if he even uses drugs. We have seen his facebook profile picture, and this type of picture--an opiate addict generally would prefer to keep a lower profile than put a picture of himself up on facebook holding a gun.
This guy appears a lot bolder and more unpredictible to me than Tommy or Ron. His grandmother said he did some time for stealing a car. This type of crime is a bit bolder than walking to the back of some handicapped guy's trailer and stealing one of his guns, which sounds like a typical opiate junkie crime.
The overdose story is a possibility. That kind of thing has definitely happened, definitely. The thing about that though, is that you wouldn't expect these people to keep their story together as well as they did. I mean, small time junkies--you would expect them to sing like canaries at the police station. I just don't believe these people would have taken care of matters as quickly as they did if it had been an overdose.
If Joe Overstreet really said that river would be a great place to kill somebody--that says a lot. But we don't know if he said that. We wouldn't expect Tommy to make such a statement because Tommy is either high and feeling fine, or he's not high and thinking of what he can steal to get high. He's not thinking about killing anybody.
I wish we knew more about Joe Overstreet.