Advanced Rigging Help

So I've been working on this project with one of my team members, and it's gone pretty well. Except that when doing the rigging I encountered a problem... I made my skeleton from the head down... And now when I try to move any of the backbones it rotates the lower body instead of the torso... Is it because the origin bone is in the head? How can I fix it? Here are some screenshots of the creature. Which we have called the demo-gorgon.