Charlie Sheen quit Two and a Half Men because they weren't giving him enough millions of dollars, I don't think the returns from RBN are up his alley.
I'm paying him in cocaine, so it'll be fine.
So, does this mean no Buckethead?
It means nothing he was working on is getting through unless he can either convince his artists to try it again with other groups, or other groups can convince the artists themselves.
But some of them are most likely going to be of the attitude that it's not worth their time to bother with it at this point I'd wager.