I was watching the news conference today when Arvidson showed the picture of the area under the lander. The spiral object(crinoid?) was clearly visible. Naturally there was no mention of it since it happened to be the MOST interesting thing that has yet appeared in any photo. They are following the Steve Squyres method. Always totally IGNORE anything unusual or interesting. If asked a direct question concerning an anomalous object...create a diversion by talking about sulphates!!! Then move quickly to the next question.