First off, it is Kalanchoe luciaie, The names got confused in the trade years back and it has been a lot of confusion straightening out the mess. One can cut it off with a sharp knife , let it calousover and then put it in fast draining dirt and mist till it has roots. I would wait till spring. But it is pretty warm where you are (not this week but usually)

You may want to wait until the stem is a bit longer to provide something to actually plant in a gritty mix. And I might say it is a "winter grower" based on the information of James Feucht, PhD http://www.florafauna.com/caresheet-categories/cactii-and-succulents-en/cactii-and-succulents-general-care-sheet/caudiciform-dormancy-table-by-james-feucht.html. Just my 2 cents.