Well i was on the game today fighting doing a heart mission in the charr 15_25 zone when i encountered this bug.
I was using a greatsword as a warrior and when i did the whirlwind attack to finish off the skale nest, i got sucked into it and it wouldnt let me back out, after a few minutes of struggling i decided to use a waypoint, i know the price isnt much (45 copper or whatever) but it is still a waste of money having to teleport when i shouldnt have been stuck in the first place.
Hope you look into this Anet team.
Yours,
Jack Dowse