Just read about this a short while ago. Shame, to have been sober for as long as he was, only to die from a relapse. I won't get all preachy, other than to say having spent years as a social worker, case manager and addiction counselor, I've seen this happen way too many times to too many otherwise good people. RIP, Chuck.
He was terrified of performing on stage despite being such a talented showman, this fear led to him drinking heavily before performances and ultimately led to FNM sacking him