DPS wise I held my own with the help of the DW spec. I hit 5164 DPS on Anub Rekahn and still came in 4th, they had three people break 6k DPS and one was a hunter. For the night I did 3500 including kiting the zombies on Gluth.
If you plan on being a kiter, make sure you have Unholy Blight, that would have made it so much easier rounding up all the zombies.
Now I'm back in my Unholy Tank/DPS spec so I can start tanking again after a week off.