Funny, but probably ancient glitch.
If you cast Warp, get Warp II'D, Retraced, Teleported, probably Escaped, and just as the animation goes off talk to an NPC with a confirmation cursor, you can sit there til you exit the convo.
Interestingly, if you do this with say, Warp, people around you will see your model disappear, but your name remains... if you get teleported while in this state, YOU see your model disappear, and whichever spell you originally locked yourself with, is the one that fires.
XI Wiki

