Hi,
Just found this bug while I was messing around in the town...
1. Get Deepstone Oil. You can buy it on AH for around 50g per stack.
2. Go to a flightmaster.
3. Put your cursor (mouse) over a zone.
4. Click it and then quickly click on deepstone oil.
5. Congrats! You are now a flying statue which defies every law of physics.