Sorry to hear that stbxh is being, what boils down to, juvinile. It sounds as if he is just trying to get a rise out of you or punish you for all of your 'transgressions'. I wish for your sake this was over.
Since he is dragging this out for whateve his reason (hell, he may not even know)...Ask yourself, 'what would I do tonight if he had actually signed those papers?' Whatever your answer...that is EXACTLY what I would do....whatever the 'EFF you want to do.