A recent East Hampton Town Zoning Board of Appeals decision to allow the former East Deck Motel in Montauk to be buffered from the Atlantic by a 20-foot-high man-made dune appeared to sidestep several key questions — notably whether the project had adequate scrutiny and whether it might jeopardize the public use of the beach. The work was pitched as a restoration, but on closer look, it is far more than that and points to inadequacies in the law, which would affect how the town deals with such requests in the future.