It would seem every opposition manager knows we are weak down our wing because we only have our full backs playing wide. Quite a number have said that they have purposely worked on that because they know it's easy to get 2v1 on our sides. Playing with width in a 4231, for example would negate that to some extent.
Whatever he is trying isn't working, whether that's because our players don't understand, he doesn't explain it well or it's just flawed doesn't really matter, the result is the same.