Since people are obviously fascinated about the objects at the crime scene it would be worthwhile to consider how late in the investigation those images were taken. Let's look at the progress at this particular site. Here's an image when the officers are near the beginning of the "dig." You can see they've identified the area of primary interest and are beginning to use rakes and other tools to start the process. One blue tarp is on the ground and very little additional equipment:
BELOW we still don't have any pop-ups but they are laying out the tarp that will eventually have the orange fabric placed on it. Also note the tripod with laser scanner at the top of the frame. The technicians scanned the surface area before commencing the excavation:
BELOW: A backhoe has been brought in the dig is well underway. You will notice that two popups are positioned and the officers are placing side panels on them to obstruct the view and maintain privacy. This strongly suggests that this is when the remains are going to be documented and then removed from the scene. The blue tarp that will have the orange fabric placed on it has been used for sifting and you can see the dirt beginning to accumulate. On the left is a sifter near the white popup and dirt indicating that this was a location where they used buckets to sift through soil as it was removed:
BELOW: Here's another view of the area of primary interest:BELOW: The additional popups have been removed and we clearly are past the point where the remains were discovered. The tarp in the foreground is obviously where the buckets are used to bring soil that is sifted, creating the dirt pile on the tarp. Note that the orange object is not present:
BELOW: This is the image that most people are studying with the orange fabric and material some believe represents human remains. You can see that all popups are gone and I would be genuinely shocked if the remains have not already been packed and delivered to the lab. It would just be very strange to go through this whole process and take down all the gear while leaving the most important evidence at the edge of the tarp as shown below. That the shape of the orange fabric matches somewhat the area being photographed is probably a coincidence (in my opinion). You may disagree and that's fine.
http://visuallaw.net/CrimeScene04.jpg