Earthquake in GFay last night? Devs?

[andvarion]

I and apparently everyone else in GFay at the time experienced something quite odd last night.

I can only describe it as an earthquake. I was running along between Kelethin and Felwithe at the time, when suddenly my screen went crazy. It only lasted for a few seconds. It's hard to describe, so I made this crude mockup animation to show you pretty much exactly what I saw (assuming I was a purple box and not a bard):

http://vimeo.com/28200400 (May have to play it through more than once after it buffers since it' so short. I had to.)

Obviously I dismissed it as a graphical glitch, until I saw comments like this in OOC:

"wtf was that?"
"earthquake!"
"i thought my graphics card fried"
"it's the Hole opening event lol"
"wow i thought i glitched"

So apparently it was zone-wide. I didn't realize something like that was even possible in EQ. Did it happen in other zones as well? And what on earth was it? Any idea devs?