A couple of people posted that he'd been battling lung cancer and was in a great deal of pain, they believe his sobriety was strong and that it was a personal decision to end things on his own terms to end the suffering. I'd like to think that was the case, to relapse and die from an addiction is so very tragically sad.
If you follow the link below you can read the comments I'm referring to.
God, what a mess, on the ladder of success
Where you take one step and miss the whole first rung