You said you have a Georgetown, I have a Mirada (2001)
I read the post your referring to about the wall breaking away from the frame structure and also wanted people who have a Mirada to know this could also effect them.
I had the same thing happen with my Coachmen Mirada. The front left wall had detached from the frame and the entire front left, including the windshield, could be seen moving up and down an inch or two whenever I hit a bump in the road.
Fortunately for me, the fix for the Mirada was a lot less complex than what was required for the Georgetown. I was able to do an emergency repair while on the road, and it has held good so far (1500 miles)
The Georgetown is different, here is the sticky your referring to:
The Mirada attachment method is different than the Georgetown. Here is a link to how I repaired the Mirada.
Emergency Exterior Wall Repair | 2001 Coachmen Mirada 300QB