With regards to his wife recognizing/not recognizing his clothing from the video/still images, I will say, most people don't have 10 or 20 different coats. The blue jacket/coat was an outer layer, and even in a cold winter climate (I live in IL), I have maybe 4 coats, and my husband has even fewer. I know it looks like a nondescript blue coat, but unless it's one he literally never wears around me, I would recognize a coat of my husband's or at least be like "Hey my husband has a coat that looks just like that." Then I'd maybe put together the sketches, the voice, the walk, the rest of his outfit that day and start to get a sinking feeling in my stomach.
However, it's very possible she was in denial. We don't want to think our loved one, in fact maybe the closest person to us - our spouse - could do something like this. So we rationalize it as "A lot of people have plain blue jackets" or "A lot of people could have been walking the bridge that day." Maybe he even gave her a very believable alibi (for lack of a better word, not suggesting she asked him for an alibi). All MOO