Bad deal with the feet, Kat.
Vapor barrier has always been a toe-saver for me. I've got some booties that go inside my shoes. Grocery bags or bread wrappers are the Fred Sanford equivalent. If your feet come back, you might give it another go with a vaporproof barrier inside your footwear system.
So, you learned your lesson about bombing downhill when cars are sliding on ice? The short version: don't do that! Are you crazy? I'm sorry the lesson was painful. On the bright side, it could have been worse... Shudder...