I am hoping that this is a sign that they are not going to harm him though I don't know why there would be a negotiator unless S Korea is willing to bend a little. That kind of worries me.
I'm thinking that he bought himself some more time because maybe his captures realize just how mean and effective the SK military is. Remember, SK doesn't have the likes of Kerry, Kennedy et al complaining how they fight this war. The SK army will kick some serious ass if they have to and not think twice about it or give a chit what their media whore have to say.