Silly question, but have you tried simply tapping the fret and down with a small hammer and a block of wood to protect the fret? Always try the easy stuff first, sometimes you get lucky...
Yes, that made it playable, but I wasn't able to get the ends to go down and stay down. A fret press and glue might fix it. Or they may be stuck with the gap.
I can probably fix the neck skifting with some attention to the pocket. But cranking the screws doesn't hold it in place.