I can confirm this. Killed him an hour ago and I was maintank. He knockback-rooted me out of range right away and went on to kill a few guildies in the general surprise and confusion.
I'm guessing your using showeq to figure this out.. the levels you see here on alla for 68+ are not exact figures, they are rough estimations of mob difficulty. far as I'm aware alla doesn't use showeq for their level ranges they based on /consider