I would surmise from that description that he was deemed mentally unstable or some other title.Yes, and I have done so. Especially when we found dad in the bowling alley in his tidy whities and socks with a borrowed Safeway shopping cart walking the alley lanes "shopping".
How would to do that for the bank shooter for example that was seeking treatment but clearly not having enough issues to be committed. Take their firearms and they disagree so they report the firearms as stolen by you. Then what?
As they go out and buy new firearms?