Fishkeeper
Crowing
No, pushing it back won't work. Either it'll get an infection and die of sepsis, or the organs will get twisted, the bloodflow will get cut off, the area of the organ will die and rot, and the chick will die of gangrene. Both are nasty, slow, painful deaths.
If you're going to hatch chicks, you have to be prepared to deal with any that need to be culled. If you can't do it yourself, you need to quickly find someone who can. Probably the best method you have available to you is a pair of sharp scissors to remove the head. One hard snip will do it- don't hesitate. The body may move some after this, but that doesn't mean the chick is alive still, that means that remaining nerves are firing randomly.
If you're going to hatch chicks, you have to be prepared to deal with any that need to be culled. If you can't do it yourself, you need to quickly find someone who can. Probably the best method you have available to you is a pair of sharp scissors to remove the head. One hard snip will do it- don't hesitate. The body may move some after this, but that doesn't mean the chick is alive still, that means that remaining nerves are firing randomly.