No. They need to be overwintered in slightly moist soil or potting mix. If they were in the ground, you can store them in smaller pots or garbage bags, but be careful if you put them in garbage bags because you will have to add a cup or two of water every so often so that the soil will remain barely damp. If you need to conserve space, prune the tops. You can cut them down to a foot or so, but because you have removed the "Y", they will have to go through the vegetative growth cycle before they "Y" and bloom. You could also prune back leaving 2 or 3 sets of "Y"s on each plant.
If your winters are not consistently below 45ºF, your Brugs will not go dormant. They will still put out some new growth over winter although if they don't get sufficient light the growth will be spindly. Be sure to spray any cut surfaces with a fungicide.
You could also choose to take in your most valuable or desirable Brugs and take large cuttings of the rest to root over winter. If the cuttings are nice and large, place them in buckets and use bubblers to keep the water fresher.
