Oh that's really great! I hope we can find a consistent setup for it.

I found that you can clip out of bounds with a snowball and a moveable barrel. I haven't found a consistent setup for it. It seems like you can do this glitch everywhere, as long as you have a moveable barrel and a snowball that Lucy can stand on. Sadly I haven't found any good use of this glitch yet. In the second stage you still have to collect all "teamup coins" so you can help Lucy over the snow later in the stage.