P.D.
I havn't had to potty train in years but you story brings back memories. My kids seemed to like to go behind the old wooden rocker! My pediatrician suggesed that maybe they just wanted privacy?! Sure enough, I put a potty chair in a quiet spot and told them what it was for and very soon after words they started to use it on their own! Also, for my son... we used cherrio's and fruit loops in the toilet for "targets". Blue water in the toilet would also change to green when the peed there....oooooo Magic!! Good luck and remember that the likelyhood of his wife needing to potty train him is slim to none, It will happen for you soon!