Why would they drop the DP??? MY guess is that they don't have enough evidence to prove that Casey did it. Having the body does not ensure a DP conviction if they cannot determine cause of death, or that a murder did occur. It could be that it was a horrific accident of some kind.
OR there was a plea bargain we don't know about.
You all are assuming that just because Caylee's remains might have been found, that it will definitely prove Casey killed her. NOT SO. There would have to be marks on the body or something found that proves it was deliberate, rather than an accidental death. OPINIONS do not convict someone... EVIDENCE does.
Oh, you mean like incriminating computer searches done on the computer of the accused, as well as hair and evidence of human decomp. in her trunk. You mean evidence like that?