Good morning Jesse, you must be pretty p****d off by now , seems you've got an awkward one!! mind you ,probably, once this is resolved everything else will seem a doddle. The use of my contraption won't help with this it's only for reassembley. The other idea idea def heat , we used to call it the silent hammer ,if you haven't any other source buy a small butane torch any hardware shop DIY place will have 'em nothing fancy unless you can see a need for it ,I've had one for 10 yrs only needed 3 -4 times but really useful! Obviously make sure nothing flammable nearby ,bike and in the area around and then after making surre everything is loose on the yokes and that the bottom one has the wedge in it mentioned earlier to ease it ,keep the old nut in screwed in just so theres one/two threads above the yoke top and then heat the top yoke up to has hot has you can get it and then give it a solid smack with a lump hammer , I'm not into butchery but unless someone can think of a more gental way forward ,at this point something drastic needs to be done . Obviously if it moves down to the top yoke undo further and continue but only using mimimum force. If no movement and it's not looking like its moved at all i'd redo the heat try again or then revaluate what you are working with. For instance whats the other side of the top yoke like if it looks damaged is it worth worrying about ,at least there are fine second hand ones around and they don't cost the earth . A thought just occured and someone more knowledgeable than me (not difficult ) may be able to confirm, if you could strip the fork leg down and remove it from the outerleg, maybe you could the just take the stanchion off through the bottom yoke with the topyoke still attched,sorry don't know if feaseable sure someone here can advise...LP.Anyway best of luck ,BobH.