All I can share is what my experience has been like.
In the last quarter of last year (2012), I was hot on my WW's trail in my investigation into her transgressions, which culminated in her flying multiple times across state lines to be with her AP, while leaving me and our son at home thinking she was just an hour away at the beach with a friend. Not to mention, her flying her degenerate AP back to our state for an airport hotel romp. With the evidence mounting against her, and pressure from me by being only 1 step behind her, she caved and finally confessed (TTing, of course). After her confession, she indicated she wanted to work on our M and that she wanted to R. Of course, she was very disconnected and detached, seemed like something was "off", etc. I just KNEW in my gut that something wasn't right, but I didn't know what. Well, it turns out I had a couple more DDays in store for me after this date.
You see, when a WS is detached (emotionally or physically), seems shifty, and especially if you confront the WS about the A, they are likely to give false R. The thing is, the WS is NOT done with the A, and still has a LOT of emotions wrapped up in their AP. But they want to give you the false sense of security and hope, so they continue to dehumanize you by lying and hurting you.
When my WW finally got the message that I was serious and not going to tolerate that kind of abuse and behavior in our home, basically by way of an ultimatum, she finally got in gear, ended her A, enforced NC, and was no longer detached with me. She was VERY eager for MC and IC, and led most of that.
So, in short, it is a HUGE red flag, at least IMHO, if a WS is detached, shifty, avoidant, etc., after you "catch" them (Dday), and they usually react with false R, continued lying, TTing, and definitely a sense of being detached. That is because they are still HUGELY invested in the AP (emotionally, physically, blah blah blah), and will say anything to get you to think they are over it and ready to commit to you.
My WW actually told me she was done with the A, not in contact with her AP, not cheating on me with her AP, etc., after I "caught" her, but she later told me she was just telling me that to "throw me off her trail".
So I caution you to be VERY leery of your WW's professed desire to R, NC, etc. Trust your gut. It won't lead you astray during this time, and will be your best ally.
[This message edited by Theradin at 4:35 PM, May 10th (Friday)]