See my sbnation link below for his official statement. What I didn't see is any discussion around what most certainly must be him breaking his contract with the NFL. Maybe a case of "I'll keep my mouth closed about the real reason if you don't try to fine me or otherwise financially penalize me"? It would tie in with the DUI incident a few years later where he crashed his car into another car and was found stone cold asleep on the pavement several feet away, or so the story goes. The conscience can eat away at a person who trades money for silence about knowledge of wrongdoing. In the realm of theories it's just one of many, but perhaps it's really what he stated, no shadowy DS players in the background, etc. right now the search engines are flooded with the news of his untimely death so it's difficult to dig for any red flags. I hope we hear definitively the CoD from the autopsy at least. Right now we have a big knowledge gap.