This is how conservative commentator Joe Scarborough put it;

Today, we heard Mitt Romney take a shot at the 39th president of the United States, Jimmy Carter. In responding to a reporter’s question as to whether Romney would have ordered an attack on Osama bin Laden, the Republican front-runner said that “even Jimmy Carter would have ordered the attack.

…considering that Carter did the unthinkable by 2012 standards last week and praised Mitt Romney, I found his cheap shot at President Carter to be a bit jarring.   Read more at Politico

So did I.