Hey!
Searched the forums but couldn't find an identical post, anyways, there's a really simple way to get out of the starting cage before the games begin in the Isle of Conquest.
First of; mount up, ride against a wall until you get stuck and cant move sideways by looking left and/or right, you will also be running abit over the ground. Like in this picture.
http://i31.tinypic.com/2qtg22o.jpg
Once you have got that, you need to disconnect yourself somehow, there are several commands to do that, one of them is /afk \n which is the one I use.
Once you've disconnected yourself, log on back to the server and log on the character, as you log in, keep running forward, you should end up in the middle of the gate or even past it if you're quick enough.
Proof:
http://i29.tinypic.com/21o7ble.jpg
Might work for the allies, haven't tested.