Don't try to mind-read too much. Someone told me during my first trip through here "Don't try to rationalize the irrational".
That's exactly what LBS do, and it's why they're on roller-coasters; trying to interpret irrational behavior. I've stepped back for a mere 5 days, and my mind has become increasingly clear and more in control.
Also, my W told me less than 2 weeks ago that she loved me a lot, wanted to be married to me, had been fighting God. A few days ago, she hugged me, laughed/joked with me, talked about moving in together. Yesterday, she was like "I don't want to talk, I just want divorce, so see you in court".
I know it hurts, but its VERY common, so at least know you're not alone....