...seeing the dragon take off with me in an awkward mounted position on the ground, my body rotating as if I were on the neck of the dragon now visible in the horizon.

Basically, my character doesn't move with the dragon. When I fast travel with it, my character is stuck in the loaded position, often being 50m above ground.

Anyone know how to fix this?

You have a screen of this?

I have several:
http://i45.tinypic.com/24zj5at.jpg
http://i49.tinypic.com/55p8h3.jpg
http://i48.tinypic.com/1g0tgm.jpg
http://i46.tinypic.com/2v7zdxg.jpg
http://i47.tinypic.com/2v16n39.jpg
http://i48.tinypic.com/dzea7t.jpg
http://i48.tinypic.com/2aeqo0h.jpg

Lol! I guess levitation is back!