Hmmm, well, I may be TOTALLY off base here, but it MIGHT represent the A'arab Zaraq. I mean, perhaps it symbolises the balance of Hod and Netzach in every person (someone also mentioned human faces on the knees, which I can't see, these might represent Adam and Eve, who have an association w/ A'arab Zaraq). Anyways, that's what I think it might be. I know Therion has focused on that before, and it seems to make some sense. If anyone has a better suggestion, or more support for this one, please post a reply.
Also, there is another copy of the same figure on the back of the case (lower right) and on the second to last right hand page (also on the lower right).
~The (Only Trying to Help) Cretin~