This is an image of a footpad and it shows the region around the pad in good detail.  At the lower right edge of the foot pad we see one of the mysterious segmented cylinder shapes. The time code is 896662759. Image is available at this link on the NASA web site.
		Here is another view from a slightly different angle but showing the same patch of soil.  We can see that the area is question is clearly visible in both images.  Now the segmented cylinder shape is gone, and no trace of disturbance is apparent on the soil surface. The time code is 896662868, 109 seconds later. Image is available at this link on the NASA web site.

The image on the left is a close up view, and the image on the right shows the same area in close up. You can see the before and after differences clearly.

Here is a differential image showing the changes in blue.  By overlaying the first and second image on each other and extracting only the changes (in color) we can see what is different. The blue segmented object is the item in question, and is present in the earlier image.

A closer look shows that the object is still present but seems to have taken on the color of the soil and moved slightly.  Since both images were taken using the same filters, we have to conclude that the change in appearance is due to the object itself, and not a change in lighting or color filter.  I thought that soil might have blown over the object but this is not the case.  Other features in the frame are undisturbed, so we must conclude that either something placed soil over it selectively, it changed color, or it moved.  Could this be an organism?

Thanks to Darwin, one of my forum members, for bringing this anomaly to my attention.