It was the most chaotic chick-out-of-the-egg moment I have ever seen. Crack crack crack, a little eye looks through the tiny gap, then POW there are two crazy long legs spinning about kicking everybody and everything LOL. That one of course has turned out to be a cockerel and got the name Liu Kang for the Mortal Kombat video game character.
Definitely best to leave the boot in place for a little while in that case. My chick only needed boot assistance for about 24h, some may need it longer from what I've read. The toes may not be perfectly straight once the boot is off, but if the feet are open when the chick stands then the chick's own weight when standing may be enough to help do the rest once it's no longer at risk of returning to a knuckle-walking type state.