Wait, are you talking about the thing on VH1? Didn't that have Scott Ian in it too?
And my take on the Newstead thing is that he left because the other guys in the band are pricks.
I think you're thinking of Supergroup w/ Ted Nugent and that dude from Skid Row. I saw one or two episodes and lost interest. That show isn't about the creative process, its a frikken soap opera like every other psuedo-reality show.