As do I. But do we really think Baez is dumb enough not to know there was "no body" after two weeks? After two weeks the body had decomposed and the remaining body parts pulled over half an acre. Shortly after that - that piece of land was under water. Just how much depositing of false evidence, tampering, moving the body, etc., etc., could have been done if they were even able to find any parts in all that dense underbrush once the water receded? How was Baez going to retrieve this "body" and hide it? It took the forensics team a week to do that, on their hands and knees, clearing away the brush and the muck.
I'm all for speculation but I'm not for speaking "in certainty" until at least the experts battle it out. My speculation was Casey drove up to the side of the road, got out, opened her trunk, walked three to six feet in - as far as she could without getting anything on her clothes and shoes and just heaved the bag in. The plants, the animals and the flood did the rest. And I hope the plant growth will prove that.