NEW: Alan Dershowitz says prosecutors overreached by pursuing first-degree murder against Lindsay Clancy and predicts they won't make the same move if the case is tried again. There is no dispute that Clancy killed her three children, he says. The real fight is over her mental state and whether she met the legal standard for insanity. Dershowitz points to the hung jury as evidence that reasonable people can come down on opposite sides of that question and says a plea deal could ultimately make sense for both sides. @​AmericaRpts ▻