Very strange ginger ale

I bought a small bottle of ginger ale today. When I got home I put it in the freezer to cool it down but I happened to forget it there... so now I was like shii I forgot it in the freezer. I took it out. To my surprise it wasn't frozen and I thought oh well I guess ginger ale has a lower freezing pont but THEN it started to freeze, in my hands, from top to bottom. It took maybe 15 seconds and it was all frozen. Very cool but I can't explain it? I can imagine it fell asleep in the freezer and remembered only when I was about to drink it that it was supposed to be frozen after three hours in a freezer.