Character giving me errors when trying to log in

HI there!

I was flying from Tanaris to Crossroads and got a WoW error on my character.
Now I can't log onto him without getting an error.

Is there any way to reset his position so he's not flying?

From the website go into My Account>Services>Select Realm>Select Character>Set Currency:Free>Character Unstuck

Thanks a lot! It worked perfectly. :)