We had to call the sheriff's office a little over a year ago because of threats he was making towards my wife. They took him to a local hospital for an evaluation and the neighbor, who is the director of a regional health care company went to the hospital and convinced them to let him take him back home. The hospital broke the procedure by allowing that, since he was supposed to be released to the law enforcement office that transported him to the facility.
Shortly after that, he started trying to have his brother agree to my f-i-l quit claiming the property with the condition that, upon his death, the property would be deeded to the neighbors. The brother would not agree to do this, so the neighbors had him quit claim it to them, with the stipulation that he could continue to live there until his death. They wanted a conservatorship and power of attorney, but couldn't have both.
It's been a real mess.
Correct, power of attorney is applicable in less advanced states of cognitive decline. Once symptoms of Alzheimer's become sufficiently pronounced, there really is no alternative but to pursue a Conservatorship. Even then, a court-appointed
guardian ad litem will visit the patient and verify that his/her condition does, indeed, warrant establishment of a Conservatorship.
Your father-in-law's situation is, unfortunately, one of the most severe manifestations of Alzheimer's-associated aggression that I have heard of. On a case-by-case basis, it is really hard to project how this facet of the disease may express itself. For example, we all have a certain mental image of behavior typical of a nun. I heard about one nun who, after developing Alzheimer's, began to curse "like the proverbial sailor." Needless to say, that is distinctly out of character.
In our mother's case, she began to speak to speak in nursery-rhyme type phrases, such as "have your way, your pay, your say, your day." On the other hand, once her vocabulary dwindled down to a handful of words,
"Peyton Manning" would, out of the blue, periodically pop out of her mouth. Perhaps, it was a deep-rooted, surviving vestigial memory from having watched so much Tennessee and NFL football in which he played.
In any event, for others who may read this post, sudden behavioral changes will raise a serious red flag about the possibility of Alzheimer's more quickly than the slow, progressive loss of memory. If you will forgive a metaphorical interpretation of scripture, I do not believe that Alzheimer's existed during Old Testament times. If it had, long-term service as a primary-care provide for an Alzheimer's patient could have been the proverbial straw that would have fractured the patience of Job.