For the sake of trying, I loaded the save with the broken face and did Unlink and randomize werewolf. Sadly did not work. The face stayed completely mashed. Using the ears that hang down caused his eyeballs to melt down over his whole face... That was terrifying. This face will give me nightmares...
So it seems like at this point, that werewolf form is just broken.
Luckily, one of the saves was from before Greg's face got broken. So at least now I have one save with normal Greg and my sim is not yet a werewolf. Will see how long it takes for Greg to get broken (or if any other werewolf gets a weird face too) and if my sim gets weird yet again once they turn werewolf.