Treyarch finally wised up and said, "Why the f**k do we keep making patches to chase around these modders and clean up their mess? Instead, let's jut ban the ****heads."
So now what happens?....
Well, if you decide to get on Call of Duty Black Ops with a modified GPD in your profile, you better not even think about touching that Xbox Live portion of the game, because the moment you do, you will be banned on your account.
This is confirmed.
In summation: If you try to get in a XBL game with modded GPD, you get teh ban-hammer.
And it's permanent.