No he didn’t sacrifice for his wife he sacrifice for Nathalie look closely on Nathalie’s legs and you see that Emilie is there but it’s not Emilie it’s Amilie Emilie’s twin or Felix’mom😊
It's still a theory started by buggachat on Tumblr, we'll have to wait until season 6 for confirmation, though it's likely that the narrative will just throw logic to the side and make Nathalie and Emilie alive again