Yes, I've seem a few large outdoor yucca type plants locally which appeared to have died right back and some have started growing again. It's quite amazing really.
I think maybe my decision to wrap the pots themselves in some old shower curtain material just made the difference between the compost freezing solid and not. They had at between 6" and a foot of snow surrounding them for more than a couple of weeks so it was a very near miss.
Anyway I've just been outside in the garden and I still have new growth, flowers and recently pollinated fruit on my tomatoes plus a few blossoms on our Bramley apple tree. Not bad for November eh? Let's hope a major drought in the spring/summer doesn't spoil the party.