Rescue

I'd dig as much soil as possible out with it. I don't know if it would be best to cut it back before or after, but since it would be within an hour or so of digging it out, I don't think that it would make much difference.

Good luck with it woo and let us know how it all goes.

 

Hi Woo cut it back as Kedi says with as much of the rootball as you can, give it some protection this winter put some straw over it, it will not have time to establish itself so protect it this winter,(why not take a few cuttings while your cutting it back nothing to lose and a bit of a backup).