That can work. Most folks do that before bottling of course. I have a stubborn 3 gallon batch of peach wine that has cleared somewhat after a couple of days outside in the lower 40s temps. Right now it 24 outside headed towards about 35 today so I'm going to put that carboy out side. The alcohol content should protect it from freezing until the temps rise in a couple of hours Cold crashing as it's called does help clear some wines in some situations.