WK,
As many others have said, your ideas are pure speculation. But we do KNOW something - they changed the TANS waypoint to Coran BEFORE they reached the Mull. Why on earth would they do that if they were planning to land near the Mull?
I'm not a military pilot but I would have put in a waypoint or IP for the landing site and used it as additional back up if I was testing a new system.