What's funny about this "mess" business, is the film also doesn't come out for another 6 months and it is clearly going to go through a number of edits, VFX changes, etc. Robert Meyer Burnett has talked a number of times about the Superman Returns friends and family screening being a much different and richer film than the one that was released.
And if Sneider is saying that this is common for films to be a mess at this stage, then he is only even reporting on this film being as such because he believes it's going to get him attention, for good or bad.