It will probably come back next year, but will have a setback for a while - you'll have to wait a little longer for the flowers.
Personally I'd be inclined not to disturb the compost at present, but to water on a liquid slug/snail killer, perhaps repeating the process in a couple of months. That way if there are any hatching slug eggs, the slugs will be killed before they reach the surface of the compost and are less of a threat to wildlife and pets.
I've had a similar problem recently with snapped stems, this time caused by wind damage to young, floppy shoots whist I was away from home. Such are the joys of Cypripedium growing.