I have a bias against the 1-loss ND idea because I think they got off easy playing Michigan in week 1, have an underwhelming schedule, and have also looked underwhelming across those other games.
With that caveat, I just can't see an 11-1 ND getting in over Michigan, but accept that I'm not the one to ask and either way it would not be obvious, would be controversial, and the conversation: protracted.
Even then, that can ONLY come into play if Clemson stays undefeated, ND loses one, Alabama loses one, and the defeater of Alabama wins out. That's not implausible, but we are chasing narrow situations not to exclude Michigan but to maaaaaaybe exclude Michigan. And even in this one, I think Michigan would *probably* (a special kind of maybe) wind up on top of both ND and Alabama. Again, caveat, maybe.