Holy crips!!! Glad you guys made it out ok!!!
I have never towed our tt in the winter, but we snowmobile also. There has been some interesting trips snowmobiling, but luckily never that bad!!! We live in Mid-Michigan, and the in-laws have a cabin in Ontario, east of Sault Ste. Marie. We usually go up Presidents W/E for a long w/e trip. At times it has been mid-40*'s out when leaving. When warmer like that it is usually a slippery, icy, messy road into the cabin (about 1hr once through customs to get there).
Or some interesting trips to Northern Mi also!
Drive safely out there!!!