I presented him with the information I had received from NCSoft, the information that another mmorpg I have started playing solely because I can't play Guild Wars works just fine, and the fact that use of a VPN caused my ping to drop back to 600ms, (but this has started to DC all the time).
This time the guy admitted that yes, they are managing ALL traffic, and was not sure how I could play this other game, and that my only option would be to change plan. Which for me unfortunately is not an option.
So I guess I'm stuck getting up early and playing before 9. But I had to give the guy kudos for actually admitting it was their doing this time.