Hurricane Sandy, which had a significant, though not catastrophic, impact on the East End, has been described as a turning point for coastal policy — only it’s not true here on the highly vulnerable East End. Instead, local officials have been mired in a 1960s-era strategy embodied by the United States Army Corps of Engineers downtown Montauk project. There seems to be little more than a hope that sometime this year the Army Corps will unveil a magical plan for a vast undertaking for most of Long Island’s south shore. This is a dangerous failure of leadership.