I don't think that's necessarily the case because if the Devils did somehow sneak in and then got absolutely waxed by their first-round opponent, I find it hard to believe that Fitz would just blindly stick with Groan.
But the key word in your post is "miracle". We're still about four days away from knowing if any miracles are in the cards. Devils have to beat the Sabres and Pens, and continue to get help. Any conversations about miracle runs could fully be dead by the end of the Pens game.