As I understand it, he's not getting paid for the show after the point he walked away and not getting paid royalties which I'm assuming was part of the original contract. I don't think it's fair to characterise it as stealing considering that that's the contract he agred to.

The fact that he signed the contract doesn't mean they're treating him fairly, I'm not implying that. In fact, I'm not really implying anything. Nobody knows the full story except Dave and the executives.