Wouldn't a Nikkormat be the export version of the Nikomat?
Anyway, yes, the coupling ring can be bent back into place. Just don't do it using the pin itself. Find something to work as a fulcrum allowing you to get leverage from behind the raised part of the coupling ring to bend it back into place. A small piece of wood that's about as thick as the shutter speed ring and the coupling ring should work fine, placed against the front apron with the coupling pin rotated to the lens mounting position. Use a slotted screwdriver between the wood and that portion of the ring to bend it straight. If the nameplate is messed up as well, you may be able to get it straight by tapping on the back side with a piece of wood and a hammer , with the bottom part of the nameplate placed against another piece of wood. That said, I may have a spare nameplate. Would likely be from an FTn.
-J