All (I think) of the Wildlands are bugged at the moment. I just continue to post the problems with them as I find them and figure they'll be fixed when they get to them.
In regards to Vetrar (the big ice guy), I've cleared his area completely of mobs, as well as those than wander just outside his territory, on more than one map and haven't been able to settle anything. The Wildland border never fades. It's that way with every Wildland I've seen except the swamp one.