I put "other" because I did something I shouldn't have done -- invaded his privacy via some rather sophisticated internet information gathering -- but when I confessed I think his primary emotion was anger, not disappointment. He looked pissed for like a quarter of a second, corrected his expression back to neutral, and said something like "Yes, I wish you hadn't done that, but..." and stayed calm. Not sure if that would fit in this concept of disappointment or not.