My MIL fell between the bed and wall, took three of us to get her up with her screaming we were hurting her the whole time. Good that your buddy remembered you, you should visit more often while he still does.
I've seen this come and go for a while, Thursday happen to be a good day.. I found he does snap to when I tell him not to be an a$$hole to his care givers.. He's starting to go though a mean strict.. It must be so frustrating that your mind can't let you communicate