If you utilize the cheese or glitch as is and do not noted your system then I say cheese away. The terms of service for both PSN and Microsoft say that you can't physically modify the system, game disc or any other hardware you use to play the game to get an unfair advantage, but if all you are using is the flawed code of the game itself then there's no one to blame but the bungie and they will eventually fix it. Anyone who does violate the terms of service deserves to get banned. I for one say that if bungie doesn't want you to do it, they'll patch it