Ezechiel
Paranormal Adept
The soft-tissue organs that are generally excised are the youngest and fastest regenerating tissues in the body. They are also the organs and areas of the body where humans most often develop cancers. I think this fact may be important, but I've seen little mention of these facts by other investigators.
The fact that these carcasses are returned indicates to me that whomever is doing this knows that if they don't return the carcass, it will be a reported as stolen head of livestock and be therefore, a crime. By returning them, they nullify most official law enforcement involvement because a crime hasn't officially been committed. Plus, very few ranchers will spend money to determine cause of death as they have already lost their investment— why throw good money after bad? Its a self-nullifying mystery that is ingenious in its fiendishness. It really sucks for the victimized rancher. Maybe Oprah should do a show on this uhh (NOT!)
From a human point of view, your explanation for 'carcass return' is very pertinent and would be normal behavior if the perpetrator wanted continue his soft tissue extraction activities and minimize police interference.
IMHO, what really needs to be confirmed here is whether the 'laser' cuts and tissue extractions can be duplicated with current known technologies. If these actions can't be duplicated, it then becomes normal to start speculating about external intent.
Is this still a mystery or has the operation been duplicated in some lab somewhere ?