I would wage that the removal is almost out of the question. if budget restraints are present, then drywall could be also out.
Re painting or re wallpapering could cause the whole wall to come down. This is just a pun of course, but my point is that the foundation or one or two layers could release and it all come down.
So, I would suggest adding 1/4 inch drywall through out the house or sections to let you start over.
I am just out of ideas for you.fly your flag.
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