A polar bear authenticates a Pollock painting?

This painting definitely is(n't) a Pollock. Photo.

This story in the New York Times looks at the conflict between forensic evidence pointing to the authorship of a painting and expert aesthetic analysis authenticating the authorship of the painting.

This particular example, a painting by Jackson Pollock (or not), brings up the weird possibility: what if Jackson Pollock put this paint on this surface, but it's still not a "Pollock"?