At a guess? Their data center lost power. They did not have anyone sitting just to watch the servers so they ran until the battery back-up power ran out. At that time, the servers did a hard crash, the games froze for everyone including the staff members and/or family playing one last time before HD came out. Someone, probably the low boy on the IT totem pole for Lotro, DDO and AC, then drove over to the building and said "OH *%$*" and called the big wigs.