Now that he no longer served Dunesphere the laws and policies they used to dictate no longer applied. He still had multiple slave labor camps that his forces controlled, however it would really not be appropriate to keep working these Goblins to death under the current circumstances. So he sent messages to as many tribes as he could think of to let them know that he was freeing the “Olgogs” in the camps. Naturally since he didn’t have the resources of Dunesphere anymore he couldn’t transport them anywhere, plus as he had to feed and water his own people now he really didn’t have the resources to keep them alive. Rather then just release them into the desert to die (it was tempting but again would send the wrong message) He was going to free them to anyone who came to get them.
“So come one, come all! thousands of Olgogs for the taking. Come soon, we don’t have any food or water here so come before people starve and or die of thirst…this isn’t a threat we really don’t have supplies to last more then a couple of days. Please take back your people because we really cannot keep them going much longer.”
(Note these are half starved Olgogs that have been in camps for years, they will never be right again, thus they cannot be soldiers. They can however be used as civilians living in your lands. No one tribe can take them all, they will be spread around to as many tribes that ask for them. You have to be able to feed and water them regularly)