The Hunter was not Roygaris, he was Ezra, or rather, "Ezra's hubris". The Wolf is the rest of Ezra. The Wolf and the Hunter are linked and the Wolf must battle for control every day.
The Hunter would have been unaffected by the destruction of the Vir, and presumably took Curoch back into Ezra's wood.
Or the Hunter is an amalgamation of "The reaver" and Ezra.
Durzo said Roygaris made himself into something new during the battle called the reaver. That he was the first one to even wound it and that its blood gave him permanent pockmarks on his face.
He also said Ezra defeated it and dragged it alive back to Ezra's wood. And that 50 years later, there was a power struggle of some sort, and that since then, everything entering the wood has died. Ezra is certainly part of the hunter, but the other half is certainly Roygaris