Finally got the solution to mine after the problem got much more frequent over the last month.
After throwing about 30 codes, which seemed to point to a communications issue, I had it in to the local Ford dealer for Diagnostics. It took ALL day but they found the problem. Turns out the drivers door wiring harness had a broken wire but inside the insulation so it wasn't obvious. The break was in the part that goes from the door to the car. They would squeeze and adjust the harness and the problems mentioned in my previous post would come and go.
Fix called for replacement of this harness.
I've had the repair done now for three days now. And my issue is solved. Hard to believe that a simple failing wire can create so much chaos.
I'm sure the situation is fairly unique to my vehicle... but just in case someone comes across a similar issue in the future I wanted to put my conclusion out there.
All the best my friends.