I don't know if Jonathan jumping out of the boat early cost him or not, but I was surprised that he didn't get picked. I didn't think he'd be long for the game anyway, but I figured one of the other alpha males would be packing their bags first (after all the praise Jeff gave Willard pre-show, I knew he wasn't going anywhere). I wonder if Caryn being on the same tribe as Coby resulted in her picking Willard over him.
And considering he didn't get much airtime, I don't know if him being quiet had anything to do with it, either. True, the only times I can remember seeing him he was off by himself, but there must have been another reason.