I believe with these you just have to wait it out. Maybe give it a little Nutri Drench or sugar water in the incubator to give it energy. That chick did not completely absorb the yolk. I think they just have to asorb it outside the shell. You will just have to wait and see if he lives.
Of course. I am just saying when all activity is done and you are ready to throw out the ones that did not hatch make sure to candle and check for movement before throwing out.