Well actually it's a glitch from the newly released PTR 3.3 build... Here's how it happened: I was flying in howling fjord and i opened up the game map which takes up the entire screen now, and when i tryed closing it my game froze. So i alt-f4'ed and logged back in, but when i got back in i logged in to the eastern plaguelands for some reason and there were northrend mobs flying through the air and i was on my epic mount. VERY unexpected i must say. And NO I am not modding anything, it seriously just happened :P (less info)