Well, that's just bonkers.
I used to be a coder. Now I'm in management and I've learned, the hard way, that management is it's own specialty ... and that the best managers don't see them self's as "above" their team, but the "team coordination & external communication" specialist of the team. The only reason for the extra pay is the expectation that a manager take the brunt of the "external" crap (aka. having responsibility for the team) so that the rest of the team don't have to and can keep working. Which means that just as you need knowledge and experience to be a good coder, you need knowledge and experience to be a good manager. I find the notion of going from "best in your field" back to being "the green guy" at the height of your career as utterly crazy.
But that's just me.