This story is plain weird... but, having read a couple of times that his wife didn't know anything about it - in 25 years or so... It made me think: yeah?
For a start, a story which came out last week said he was traveling through Thailand (or HK?) with a friend at some stage and bought some lingerie at a market.
His wife was not on the trip... So I'm assuming she may have been back at home (and possibly taking food down to the basement?)
I think she knew about it and was just so beaten down emotionally/mentally she never dared tel anyone.
R