Well done! Sadly, this is part of proper husbandry as well and there is no way to avoid it.
Hopefully, this case of bad luck will never be repeated. :fl
I am sorry. :hugs
My chick pushed the lower eggshell with its feet and in doing so, just tore the still attached umbilical cord including the intestines out by itself. My first in more than 20 years of chicken keeping and I waited some hours to see if it might absorb it like they do with the...
How old is this chick? Usually they will die within a few days from the subsequent infection/blockage of the digestion, so I would put it out of its misery. I just had one hatch with a similar problem, that I put down.
But maybe someone else will chime in with a success story.