Not that I care that much, but ... in the same scene, I notice a distinct lack of shadows, dynamic or otherwise, from the blonde lady's hair onto her body.
If one looks at the troll picture, however, we can see that its left leg (which we see on our right) is shadowed, obviously by its kilt. Compare that to its un-shadowed right leg (our left).
Using this, I believe that creature's do self shadow. Hopefully hair applies to that as well.