I just watched this one today on one of CD's volumes. I felt horrible for this couple, especially the wife, because after all of that heartache and searching and wondering, you find your husband only to realize he isn't the same man who left.
From watching the story, I never had any doubt this wasn't real. That article is interesting.
The one thing that bugs me though is that if he was faking, it sounds like he did a hell of an acting job on that train.
Maybe it really happened and then after he got his memory back, he didn't want to go back to what he had.
Sad, sad ending no matter how you look at it. His poor wife... my heart goes out to her. She thought she lost him and then she really did (more or less).