Don't keep him separate for too long though, otherwise he'll have the challenge of integrating into the flock. Last thing this lil one needs is another challenge.
He'll likely sleep a good 24-48 hours after such a struggle. Don't worry too much about food/water during this time as the yolk it absorbed immediately prior/during the hatching process is enough to sustain them for a few days. As long as this lil squirt is breathing, I'd give him the chance...