I agree w/ being wary of feeding negative interpretations...it can be all consuming and inevitably force you to spend more time focusing on her than on yourself...hell I do it everyday...I think some other users have become upset at how much I think or speak of it and they have moved on to other threads...can't say I blame them.
My WAW has done the exact same thing though, prematurely removing her M name, and seemingly an all out war against giving me any closure on the matter. In my sitch perhaps b/c she's too confused, or when she says "I don't love you anymore" that's really the only thing she can say...it really kills me b/c usually as R's end (never had a terrible break-up) there is more conversation and willingness for understanding-and it helps.
The other thing I think of is perhaps so that WAW doesn't have to look within or deal w/ her guilt or shame.
I've done alot of stupid things in my sitch, some stuff I didn't mention, but I've been very self-destructive...anyway, this morning I felt like I couldn't face the world b/c of what I've done (gambled)...and I recalled my W two months ago having that same deppression and shame and even said the same thing- in her case it was shame/guilt for drinking, using, and cheating.
I think the WAS has more strength when they avoid the "full-disclosure, or they get to the point where it just doesn't matter- it's how hey feel- 'why do I have to explain how I feel?'