You are a scammer too. Graet will ignore all of your requests and demands. When people gave you bitcoins they didn't have any kind of written agreement with you. Legally they can't demand anything from you. You know this very well.

You didn't have any written agreement with Graet either. His forums posts mean nothing, so you can't do anything. Graet might pay other creditors a little bit, probably very little only because he doesn't want to lose his face completely. But you're a scammer, so you're last on his list.