I kind of felt sorry for this couple caught up in the fervour of the impending millennium and how close we were meant to be to the end, all those years they invested and wasted to the extent where they are now an old couple that time has caught up with, that initial confrontation all those years back is still fresh in my memory yet this old elder cant even remember a second of it.
It's very sad to see those things happening, including people we get to love and grow up with. I guess that it was a good thing in my case that I didn't connect with JWs at all.
Something I'd think about is, did he really not recognize you? If he know who you were, I'd had used it against him. He's lying by choice, which means that he's sinning, which means that his Jehovah doesn't love him, which means that all those 25 years have been wasted because he lied and now he's still going to get killed by his own Jehovah.
I know I'm heartless.