If you don't mind, I'd like to chime in with a little unsolicited advice.
I'm not sure what you're attempting to do (repair accident damage?) but a car that's been mashed good enough to push the fenders into the doors and keep them from opening is probably going to need some professional repairs to be safe to drive again.
It's unlikely that replacement fenders will bolt up and align well after all of your trouble. From the original post, it wasn't possible to tell the extent of the damage. However as you mention both fenders / doors are damaged, and you're struggling a bit just to remove the one fender, it wouldn't appear that you're a professional body man (neither am I). You might be better off leaving well enough alone and getting an estimate for a professional repair. It'll probably cost more if you remove everything that's been damaged and realize it's worse than you thought. A good body shop for example might be able to pull out the unibody back where it's supposed to be and let the door open again before the home repair makes it worse.
Otherwise, carry on.