E Bway washout and re-nest mystery

(The first photo was taken on 16 May 2011 after exclosure was over washed)

Last night a high tide combined with a storm and washed out the nest within the exclosure on the East Broadway, Milford beach. Remarkably, this morning (15 May 2011) we found the Piping Plover pair with a new nest just outside the exclosure and wrack. At least two eggs were in the nest. Never before have we heard of or seen a new nest with recovered eggs after a washout. One possibility is that the locals who helped us protect this exclosure had a hand in the new nest. (We'll make enquiries.) Sadly the new nest will probably be washed over by the high tides coming tonight (Sunday) and the next two nights--we are about to have a full moon. If humans were responsible for the new nest, ironically they might be harming the PPs by tricking them into incubating unviable eggs. Attached are a few pictures of the exclosure and the site of the new nest. In the third picture the incubating adult may be seen just to the left of the exclosure.