Good move. If they don't all hatch close together they get left.
A strong shears will put it out of its misery pretty quick.
Not for the squeamish but humane.
I'd make a brooder from some kind of container and a droplight with a 60 to 100 watt bulb depending on the size of the container.
You could temporarily put some bottles or jars filled with hot water in there. A heat pad works too.
That way it can walk around, put paper towels on the bottom. Then...