What Columbia said was right.
There are rules and you mustn't brake them because of your own fun. As your admin, you are making sure that the players have fun and that is your main priority to secure the servers from cheaters and clear all the spam, flame fights etc.
As I said before multinicking is only allowed when you have a reason.
The reason why multinicking is not good, first when you ban someone with a different name you make work for the higher staff to find out who it was. a lot of cases even when people don't multinick.
another reason is, you use your power like white chat with a different nick which makes the players question who are you, frustrate them. This as well should not be happening. You got one nick, stick to it! If you want to have fun, you can, just play by the rules or leave the adminship.