People, it's not his Gamertag which is the problem, it's something in his profile which is against the Code of Conduct.
http://live.xbox.com/profile/profile.aspx?pp=0&GamerTag=gS+kRayToR
If it was his Gamertag, then that page wouldn't even display since the name wouldn't be allowed to exist, but as you can clearly see by clicking on the link, it's his profile and/or bio which inappropriate, not the name.