While not just me directly, this event is easily the worst thing I was ever involved in during live. Our guild (Veil of Shadows) had a feud with Strategeme. During PoP, RZ was the obvious bottleneck to getting into the elemental planes.
If I recall, Strategeme would often go and hold the place holders for the event with really no actual ability to down them and just sit there for long periods of time. Well, we said F that and decided to break their mez which in turn set off a couple hours long event of each guild training the other, eventually leading to the whole zone crashing and a whole bunch on non-guilded people getting really Fed over in the process.
Each guild had a "pocket GM" which were called in and made things crazier (I can't recall exactly but it was something with respawning mobs and such). In the end, both guilds got banned for a week since this was the culmination of other instances like this happening. Pretty sure one of the GM's got fired.
https://www.youtube.com/watch?v=8dq2...JEGXJhEQr3N7cJ