You don't show up with answers, you show up with ears and listen.

As soon as he made them superstars, they decided to stop paying him.

He's not working and not getting paid.

You gotta take your shot if you don't want to pay what you owe.

It's sort of an often-told sad tale of a band dumping the person who greatly contributed to making them successful so they don't have to pay him.

They decided they didn't need him anymore and kicked him to the curb.

Artists are used to working with producers, making the albums and doing the paperwork later ... It's always an oral agreement in this business.