Spritzhenry's Garden

You can either lift the whole plant out, some roots will snap off and a new plant will re grow from these. Once plant is lifted or clear away some soil to get to the roots, cut roots about 1-2" long make sure you remember which way is down, then replant either in cells or 4 to a small pot. In a free draining gritty mix. Water and leave some where to keep an eye on.
Dont forget you will get leaves before roots so give them time