This is NOT true. From the team:
Hello Daevas,
I would like to address this thread and similar threads like this that sometimes occur in our forums. We encourage you to report bugs, players breaking rules or other suspicious circumstances via in-game petition or using the Customer Support web page. Additionally coming onto our forums and creating threads like this one are a violation of our Forum Rules and Guidelines.
• Conspiracy threads are not permitted. Any groundless claims or complaints about NCsoft or any of its employees acting in collusion with or granting favoritism to any group or player will be removed without notice.
I am leaving this thread up because I want to address what I see in this video. What I see in this video is definitely one of the weirdest NPC glitches I have seen in our game, however I do not see a GM attacking players.
If you look closely, the guard is actually at least 2 guards. One is a male guard holding a sword in his right hand. There is also a female guard looking what appears to be a bow in her left hand. The female is graphically clipping into the male guard. How they got to that point, no idea but it they are guards. NOT GMs. A GM cannot just change his name to some random NPC. When a GM morphs, they still contain their name. A GM is not up on some hill above a guardpost, spawning mobs to glitch into each other and attack players.
The player is attacked by the two guards when they emerge from behind the kisk. The kisk is acting as a block to attack until he moves around the side of it. The video appears to have some sort of edit in it, but not sure. There is no view of attack so not sure if it was an edit or just some lag or a skip in recording.
In instances like this, we encourage you to report these things to our CS teams, so that if there is a bug in place it can be investigated.
GM Spam has come on here previously and addressed earlier threads making accusations about players and GMs in collusion. GM Spam who is the head of the GM team has made a post regarding similar accusations here. GMs would be fired on the spot for such behavior.
http://forums.aiononline.com/na/showthread.php?t=23609