Time: ~12:00 EST
Frequency: Once (I didn't dare try it again)
World name: Diabolos
Character name: Nylee Kage
NPC name: N/A
Monster name: N/A
Class/Level: 50 PLD
Party or solo: Party
In-game time: (Didn't pay attention)
Area and coordinates: East Shroud - Ivory Chapel (X11 Y:9)
Steps:
1. I was jumping around on the steps by the altar (while facing up the steps), and noticed an unusual hang-time in the air before the decent part of the jump animation triggered. Next thing I know, I couldn't move in any direction. I was still able to run in place, and jump. Unfortunately teleport and return are disabled in this area, so I had to call a GM to move my character.

He advised submitting the report after moving my character.