On the Parkinson's online support site I read about a man going to be diagnosed to see if he had Parkinson's. The female doctor asked him ,"if he could still get it up?" He was embarrassed and lied saying, "yes." She then said, "Then you don't have Parkinson's."
Yes, sex was out of the picture. I don't see how a body pillow will help if he is still making the bed shake with his thumps and bumps.
This sounds awful, but once when he woke me up thrashing around, whamming and banging, I said to myself. "If I had a gun I'd shoot him!"