Pit Droid Ponderings

[savagecreature]

This image says it all, really.  As I've been doing more work on my pit droid design I've started to think about how pit droids move.  In this image you can see that not only does the pit droid's head turn side to side, but it also tilts. In every image or reproduction I have ever seen there is only one joint at the top of the neck where it connects to the head, and that joint is only capable of front and back motion (such as nodding).  I suspect they simply cheated the joint on the CG characters in the film to allow for more interesting animation leaving us to figure out how it might properly work in the real world.