I'll start off by saying no, this does not have anything to do with taking a screenshot. This exploit is actually very simple and I believe I am the first to find it.
Head to Drakebreaker's Scourge in Dragonwake. Walk to the front and autorun at one of the walls to the left or right of the door. You will instantly zip up to the top of the wall. Gratz team, it's pretty simple.
Apologize that this vid came out so horrible, but it gets the message across.
http://files.filefront.com/Break/;12.../fileinfo.html