Wanted to share in hopes that this may help someone!
During the last hatch, I had two sets of eggs from different breeders. One set a day behind the others. On day 21, one of the chicks had hatched and somehow gotten tangled in the incubator fan wires. I cracked the incubator open to retrieve the chick, and in doing so, I accidentally cracked the top open on one of the Day 20 eggs!!!!! Luckily, it had pipped internally, but the membrane quickly started to dry out! I followed @Sally Sunshine assisted hatching 101 found here: http://www.backyardchickens.com/a/step-by-step-guide-to-assisted-hatching
The little chick was doing well, but even after peeling back the membrane and uncountable hours, it wasn't coming out of the shell. It finally unfolded it's head but still did not emerge. As suggested by Sally, I placed the egg, wrapped in a warm wet paper towel, inside a small cup in the incubator. I went to dinner, and when I came back, there was the chick! Out of the cup!
Next issue: curled toes and umbilical cord still attached! Unfortunately, the chick struggled to move around between the curled toes and the umbilical cord. Once it was somewhat dry, I removed it long enough to give it Nutri Drench ( a live saver btw if you don't have it). I then left it in the incubator until the cord and matter attached to it had dried and fallen off. I put a little bit of Betadine on the piece of cord still attached.
By the next day, one foot straightened out, but the other one still wasn't quite right, so I fashioned a little boot for the chick, placed it in the brooder and gave it Sav A Chick Electrolytes (another chick must have). I also provided it with small bits on scrambled egg yolk.
It's been a week now since this whole uhh adventure? started, but the chicks feet are completely corrected and it seems to be doing great! This was my first ever assisted hatch, and I couldn't be more pleased. Thank you Sally for your help and advice!!! Here is a little collage of the whole process. I hope this will help someone else!!!!!