http://us.battle.net/wow/en/forum/topic/9572777636Quote:
We discovered that over the weekend a progression raid group accessed the Siege of Orgrimmar raid and spent hours on a Heroic boss in the middle of the night, after copying fresh characters with generic names, presumably with the hope of going unnoticed. Those actions go against the intent of the PTR, the spirit of fair play, and were clearly intended to go against our wishes for specific boss testing periods.