Cape Cod mystery: How did a raccoon get porcupine quills in its face?

Porcupines haven’t been documented on Cape Cod in about 15 years, so how did a raccoon found dead in Eastham end up with quills in its muzzle and arms? The question raises the prospect that rabies has returned to the Cape. (Note: This video has images of the dead raccoon that may be disturbing to some viewers.)