But that's where he wanted to end up anyway. In charge of a stack of GK units and imparting his bonus to them. The point is that now Parson can't get back to learn about the Magic Kingdom's dirty laundry.
Almost where he wanted. If Slately menages to change the capitol site before Parson goes through, he will end up all alone in the city of Jetstone instead with his army in Spacerock.
In a war it doesn't matter who's right, only who's left.