What if he defied the prime minister and the church and married Wallis? If he lasts until World War II would his desire for peace with Germany force Jim from the throne.
well if he tried to hold out, the British, Canadian, Australian, South African and maybe New Zealand Governments would step down, also in the Labour leader Clement Attlee said he wouldn't support the marriage and Churchill wouldn't ether, so he wouldn't be King very long.
Baldwin resigns, a snap election is held and the Tories win a third consecutive landslide. Immediately afterwards they ram through legislation declaring the throne vacant and "elect" the then-Duke of York King. It's not pretty and sets a constitutional precedent or 2.