I have not ganged up on George, and think he is cooperating with police as far as backing up what he originally told them, but I think he may have learned more after the chaos of the 1st crazy day's events, had more hunches after the fact and decided that he would rather 'circle the wagons' and do what his wife said than open up. That is why we have heard so little from him until lately.
My bet is that his fairly recent reconciliation with his wife, debt, family dynamics has played into his determination to play the game his wife wants him to play. My Hinky meter is a twitchin' with him