I think you are very right about the WAS being so convinced of their motives that the LBS is powerless by the stage they learn of the problem (i.e. really learn). That is what I found with my WAW (after 10 years together, another classic piece of timing eh Dom?).
The thing I find saddest though is that the WAS is so emotionally closed and determined that they do not open their eyes to the power of change that they usually unleash. If you are a WAS or about to be please read that sentence again and again. I also know that the LBS carries a significant proportion of the blame in the WAS arriving at such a desperate decision point, even if they are often not aware of it.
Like you, through reading, thinking and dealing with the sheer reality of being on my own again I have grown and learnt so much. I know I will be ok in the future, despite days like today. I only wish I knew then what I know now. I only wish my W understood how far I have come. I wish I hadn't made the mistakes I now recoginise as being my contribution to our downfall, perhaps then we would both be happy right now.
Max
Me 36 W 37 Bomb (Easter 07) Sep (WAW July 07) "It's over" (end Oct 07) T10.5 years, M2 (before bomb)