Definitely! I had one day where we were gone and some eggs froze. I picked them out as soon as I brought them in and separated them. Just like Karenerwin, I would not have known they had frozen had I not picked them out that night. I candled them the next night to show the guys and couldn't find the cracks on two of those eggs.
I fed everything back to the chickens from that day, including the non-frozen, non-cracked eggs. Do you find the eggs is more watery if the egg has started freezing to a gel state, but not cracked? I found a few of the ones I fed back to the girls watery and the yolks broke open easier.
Quote: That's a hard call. I'm not familiar with the barred rock breed regarding broodiness. I had a Silkie cross who is determined to set on the nest even if she hatches out eggs. I also have a tiny Silkie cross that will take any egg or chick you can give her. I can keep giving her chicks and she keeps taking them. The Silkies I have here are really easy going though, I can lift them up to gather eggs, put them out, put them back on any nest and they just roll with it. The only thing I can't do is stop them from setting.
You won't know unless you try it. You'd probably need time to keep an eye on everything and you've had a lot on your plate. It might add another level of stress you don't likely need at the moment.