Carol Mackie pretty much inevitably splits from the weight of snow or even less obvious causes. It's also notoriously difficult to transplant, so I wouln't try digging it up. If you can nurse it through the coming season long enough to take some cuttings from new growth, you may be able to root them. Sad to say, though, the original plant is probably a goner.

Concur with mainegrower...you gotta enjoy Carol while you have her and accept that you will not have her forever. And we don't have snow here!

Definitely try to keep it going long enough to take cuttings. With this kind of plant I try to take cuttings on an ongoing basis so that I can replace the mother plant when it expires.

Sara