I had the same thing.
I killed those Phoenix Guards using a very nifty tactic.
http://www.gamebanshee.com/ubb/biggrin.gif
I cicked again to see what would happen and that mage came back. That was understandable, since he had disappeared when he summoned those guards. So I killed him.
http://www.gamebanshee.com/ubb/cool.gif (yeah for 10 XP, that was the best part
http://www.gamebanshee.com/ubb/biggrin.gif )
Then he came back once I clicked another time.
http://www.gamebanshee.com/ubb/redface.gif http://www.gamebanshee.com/ubb/redface.gif
That wasn't funny then, but now I think it's hilarious!
http://www.gamebanshee.com/ubb/biggrin.gif http://www.gamebanshee.com/ubb/biggrin.gif