I don't know exactly but I do no that he has had difficulty with drugs ever since Child's Play and people close to him have told me that he never seemed to shake it. So I believe drugs were the foundation of his demise. I heard also that it was the reason they never broke it big. All too common with bands from this era......................Sad.
apparently I spoke too soon ....I see that Soulmotor is writing again, tho nowhere near the goodness of their self titled album. Darin Wood's got a cool, bluesy, heavy voice..much better songwriting on the 1st 2 albums.
Lillian Axe and Blue Murder should have been much bigger as well, IMHO.
Kamelot is another obscenely talented group that no one I know has even heard of.