It looks like it is come sort of plant from the Cucurbitaceae family. Plants in this family include melons, squash, pumpkin, cucumbers, etc. Most of the ones I am familiar with have yellow flowers and fuzzy leaves. I take it there have been no fruit?

I just came across this thread, if you haven't found out what it is already it's a bur cucumber, sicyos angulatus. They do grow incredibly far out and I've seen them climb to the very top of trees that are atleast 80 feet tall. Leaves can be enormous also.

You're probably right that the canadian geese brought it there, the seed pods are covered with barbed prickles.

It looks like a Goose vine to me.

Sorry, I couldn't resist.