I'm playing as England. My monarch died and I was inherited into a personal union with Portugal. This led to a war between Castile and Portugal, and somehow now Castile leads a personal union with Portugal and Portugal leads a personal union with me. This means I can't declare war on Portugal because "We share the same overlord" and I can't declare war on Castile because "I can only declare war on the leader of my personal union." All three of us now have a the same king. Any idea what I can do? It's an ironman game so I can't use the console or reload anything.