Yeah, this is prity much useless, but i guess you could use this to get away from the aliance/horde =p
First, before you go into the ZG instance, take a left and go to the wall shown here: http://img179.imageshack.us/img179/7436/zgwallp1le5.jpg
Then have someone fear you into it, and you should go through, and should look a little something like this: http://img180.imageshack.us/img180/5665/zgwallp2fy6.jpg