^^ I think what the old man said had already been mentioned at the Sand Village council meeting when they were talking about ways to recover Gaara and not repeat the same mistake that they had made with the incident of the 3rd kazekage. I think I vaguely recall something about a war breaking out because of their reckless search of the kazekage or something along those lines.
So I don't think anything new was conveyed in that story.

Anyways, this was definitely one of the better Naruto Shippuden episodes. Sasori is awesome, definitely the coolest Akatsuki so far in my books. His calm and conceited demeanor is very befitting.