Seems to me, without any further information, the only potential angle on this guy would be to show that it is too unlikely, or too unreasonable, that he could have experienced such a level of fear as to do as he did. That's it.
Personally, I have a HUGE problem with the way Hendrix handled himself. He was thoughtless, mindless, all the way around.
I can only say that, if you're responsible for a person with dementia, and especially in a place like Georgia, make sure you are able to hear your door alarms no matter what, even if you're in deep sleep (as his wife probably was). Your loved one may be killed, otherwise. That's the reality.