The film is taken at a bit of an angle. Those screws are probably close to parallel on an AP view, but given how much you can see of the endplates (tops and bottoms of the vertebral bodies), It looks really off. It looks like there was some crazy anterolisthesis (anterior slippage of L5 on S1) and they tried to make it as stable as possible. I have no idea what happened to cause such an injury. Are we sure these films belong to the guy?