[Police] what was the story on the mile Copeland/sting split

Has anyone heard any details on why Sting and Miles Copeland split up? Miles has been is manager or in some capacity for so long and I didn't read much about it despite the long tenure. You see Miles quite a bit in the DVD of the Brand New Day tour show out in the LA amphitheater. Anyone have more background they can share on this relationship being severed? Thx