So, decided to call my old buddy, Marty at Elite RV down in Harrisburg, Oregon. Him, Mark and Eric are all ex Monaco workers who worked at the now defunct Coburg, Oregon plant.
Long story short, he told me to have at 'er and just pry the whole 4 piece trim molding out of there as no adhesive was used when putting it together. So, decided to give it a try.
It sure was tight, but once one corner gave away, another side budged and then finally the whole 4 piece wooden stained framework came out as one piece, just like he said it would...see pics.
There were a few screws put in on the other side, which I don't think were meant to hold it in as to secure another piece of wooden support on the other side....the screws they used were too long and ended up sticking part way into the trim pieces that I was trying to remove.
Now that the old dinosaur is out of the way, I can begin framing a solid sheet of plywood to secure the 32" Frame TV into that space.
Checked the measurements and the 43" one is too big to fit recessed, the way the DW likes it.
Thanks for all your responses and I have attached a complete set of pics showing OEM and the removal of the trim pieces and TV.