I’ve heard it many times. My career was as a field going staff of the Forest Service and I also worked for years in the Adirondacks. You get the weirdest looks chopping up frozen beaver carcasses along the side of the road when your conducting fisher research, but I digress. In decades of research in the Forest year round, I’ve never heard of trees exploding from cold, but I’ve heard the very loud popping. So that’s a new one for me.