Corpse teleporting on Deathwing

So we wiped in Onyxias Lair today thanks to heals not paying attention.

All release and all walk back, no problem, except for me: I cant move, my Ghost was dead [yea sounds stupid], so i tried relogging and voila, i was able to move.

As i arrived at the dungeon it refused to let me in telling me my corpse was not inside this dungeon...
I tried multiple relogs, joining another random raidgroup and finally just gave up and returned to dalaran via unstuck.
Arriving there i noticed: My Corpse teleported from Onyxias Lair to 1k Winter. I dont know how, i dont know why.
Has anyone ever had this problem? Does the staff know?