Sorry to meet you like that. Sans the long distance part, your sitch sounds a LOT like mine, and your W's actions/reactions are almost identical. I think it's more than just our sitches that are similar, really, all of them share a lot of the same traits. What struck me is the idea you have that your W is doing just enough to make thing comfortable for you two to live together but not really being a "wife". My W has done the same thing. If you read my sitch (all the links are in the first post of my latest thread...look for my screen name on the first page) you'll see that it has caused me a lot of confusion, especially lately.
It sounds like you have been doing the right things in terms of GAL and making improvements. Just know that you are right to think you W is not unique in what she is doing. If you read my thread, Frank's old ones here (Frank_D), Mamabear, PArob and Tim's thread (forgot his full screen name, search for "hit the wall"), you will find people who have been going through similar situations. I know we don't really have all the answers but you WILL find some really good advice both as you post, and from other's threads.