If Terry had given her the immunity idol, that would have either been the smartest or the stuipest move in survivor history.
Stupid: Danielle, Aras and Cirie turn on Terry, vot him off. If he doesnt have the idol, he's out of luck
Smartest: Given the idol to Danielle, had a better chance to go to final 2 and would have won the million.
Out of everyone, Terry deserved it the most.