For anyone wanting to know what the OP is describing, here's a YouTube video. Skip to 1:09 minutes into the video.
Looking at the television mount, a few seconds after 1:09 when the camera zooms in a little, it looks like the arm the television rests on is a pretty standard television mount. The design of the cabinet doesn't leave any options other than, maybe, replacing the arm with a new one.
If it is really THAT awkward, then maybe you can build a new cabinet door that will fit over the entire open space behind the television with proper hinges for an easy swing cabinet door. Then mount the television to the door. That is about the only option I can see without actually standing inside the camper and trying to figure something different out.
You always have the option to remove the television completely?