Before i comment on the rest of your comments, i'll give my judgement on this episode.
I liked this one. Sasori is pretty scary. Power-wise, that is. I guess he also has a bit of a scary personality. But the 3rd Kazekage...holy cow...o.0...And it looks like Sakura isn't going to shy away this time. She's steeled herself against these Rank S criminals, and may hoefully kick more ass in 268.
Thinking that this guy's a psycho, and in a group associated with the patricidal (meaning father killer) Uchiha Itachi, one could safely assume that Sasori iced his parents likewise. But a good question is why in the heck does Chiyo-baa sama have it? Wouldn't it be kind of extremely morbid to keep the remains of your deceased children? Or perhaps, this was two of the "three instances" that Chiyoba meant. One was the murder of the father, the second the mother and the third and Kazekage.