I can think of 2 ways of doing this.
Wrap up your xbox controller analogues so that you are just spinning around in all the time at spawn, then join a quick match and that way you can leave it and just go away because if you are moving as soon as you spawn then you will not get kicked.
Get you and another account on split screen, host a private match with insane 4 bots and put you and your split screen on different teams, hopefully it will not take long for the bots to kill because they are on insane.
I will do some videos on ths if you like and how to set the controller up so that you just spin at spawn
Hope this helps mate
I done this for you, video is uploading but this is basically the steps you need to take for achieving this wingman onyx.
Controller set-up - http://i.imgur.com/29dL8.jpg
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