Saul, Before you do anything too drastic, loosen the strings and try to loosen the truss rod. Assumming that works, tighten it again until the neck is staight. That should put the neck close to the right setting once you put the strings back on. Also those bridge saddles seem a long way back. Adjust the intonation before you take the neck off as part of your problem may be the the saddles are too far back and hence out of intonation. If the neck is still bent, do the clamping trick above, then put the shim in and adjust.