I left my lager in the secondary at about 2C while I was away for a few days, but came back to find the fridge gone wild and the temp at about -1C. The beer was frozen at the sides of the fermenter and slushy in the centre, so not frozen solid. My main concern is what's that done to my yeast? Will there be enough to condition/carbonate in the bottle or should I pitch a fresh starter before bottling? Yeast is Wyeast 2782PC - Staro Prague. Cheers.