The days of running and gunning in the mountains of Afghanistan are over. A lot of people in Army Special Forces find the traditional main SF mission of training local nationals in partner nations/forces to be on the boring side. And doing it for half of your career is rough. Lack of personal and family stability, etc. Not saying that that was his motivation for the move, but it could be.
He's part of the Army World Class Athlete Program (WCAP), the same program that Jenna Burkert and most of the Greco guys belong to. So, he'll get paid the salary, BAH (basic allowance for housing) and BAS (basic allowance for sustenance) benefits he'd get as any other active duty person of the same rank. Will likely make more than most of the non-medalist NLWC guys, I'd imagine.