Hmm...interesting about the litter boxes...definitely seems like some sort of scent / territorial / defensive behavior. I wonder, with Pawley being a stray/feral for however long, he is associating them peeing as territorial spraying? And/or maybe Pawley is trying to assert/develop his status among the others?
Caesar used to do this to Sebastian until Sebastian had enough and kicked Caesar's a-double-s.
What is it with cats not liking closed doors?! Mine freak when I close a door. For the first four months after adopting Sebastian, he used to go around and open all the closet doors by pulling the bottom out with his paw (they are the v-fold doors on a track). I'd come home from work and every door would be open.
Anyway, maybe Spooky and Pawley will be best buddies! Maybe it was just a matter of the right cat coming in and being just what she needs.
Just another reason you and Pawley crossing paths was meant to be.