I recently spoke to a friend of Joe's who heard the coroner's report. Apparently he had some sort of seizure and died, likely in his sleep. He was sleeping with a friend who woke up to find him dead the next morning. She and I both think it was likely a drug interaction or accidental overdose (the report was very vague, and she and I both thought there was something missing) - he was using steroids quite heavily at the time and had recently fallen back into an opiate addiction. Any number of problems may have come up because of that. In any case, he's gone now, and he will always be missed.