When men get to that age and get into this kind of trouble, it's a good idea to have a doctor with an MRI or other scanner check them out to see if they've had any "small" or "silent" strokes. Those seem to contribute to what often constitutes aberrant behavior in old guys. Maybe he's always been this way and just now got caught, but if this is something totally out of character, he needs a checkup. (This comes from my late-psychiatric MSW social-worker mother, after discussing some odd behavior in my late-father-in-law.)

SRS