It would help a LOT if you would confine your questions to one thread, instead of starting a new one every time.
If the chick hasn't even pipped then leave it alone. You said they were on Day 21, but you removed the hen from the nest a while, fiddled with the eggs and had a bad one in there. Technically, you should not mess with the hen or eggs AT ALL after Day 18.
Because of what's been going on there's no way of knowing anything about how the hatch will go. Let the hen do her job and hope for the best.