SJ Corpse in Pic?

Yeah, that picture has been around since before the trailer. It was in the original EW photo releases back in November I think. Some people think it's a decapitated corpse, and some people think it's the SJ biomechanical suit. I think it's a suit. And yes, two members of Prometheus are examining the head/helmet in the picture. I also assume this is the same head/helmet we see in the trialer on the scanning table.