I highly doubt that it's possible they could put on a new neck - no, that is impossible if it's glued on. My uncle has a few vintage Gibsons with cracks all over the place on the necks - it's almost a rite of passage in owning a Gibson and not being careful with it. I assume there are many experts that could glue it back solid like his were.
I have a Rickenbacker bass with a cracked neck when it fell off a bed. It's pretty solid after filling the crack with woodglue and clamping it for a while.
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