If the character you are using is trapped in any structures of the world, try logging out. Most of the time, this will resolve the issue at hand. If you wish you may also try using the Return Skill.
If you still continue to experience problems, please submit a ticket to Support.
If possible, take a screen shot to attach and upload the image with your ticket. Also be sure to specify the server that the character is on, and the character name. Providing the last location of the character before becoming stuck will also be useful. A customer support representative will be able to assist you further.