This is one of the convenient "oops" by LE. Doggone if they didn't manage to forget to take a 35mm picture and only got a polaroid.
Without the clearer image, they were unable to determine in what manner it landed there. Didn't that work out well for them? Hmmmm????
I don't know about the WORDING, but instead of taking a PICTURE with a SERIOUS CAMERA (like 35-mm) they shot the picture of the carpet stain and jacket stain with a POLAROID. We all know how POLAROID's come out with a purplish tint, and are not that good of definition, and there is no negative to use to BLOW UP or ENHANCE the photo.
Why did LE do this, when they KNOW what kind of CAMERA they are trained to use on IMPORTANT, CRITICAL EVIDENCE?
I see one answer, don't you?