Puppy I agree with you (big surprise, I agree with you pretty much all the time LOL), but let's look at the situation, we've been telling him to do something all this time and he wasn't willing to do it, what happened in the end? She pretty much pulled the trigger on all of the things he was supposed to do:
- she kicked him out of the house
- she told him repeatedly it won't ever work
- she shuns him/rejects him
- she treats him poorly
- she cheated on him: possible ea/pa

And yet.... he keeps pursuing her,
so indirectly he proves everything we've been telling him and others: the person being rejected is the one doing the pursuing, she keeps rejecting him, he keeps pursuing her.

Now the recent events unfold and what happens,
he leaves, stops contacting her, stops pursuing her, agrees that divorce is the best option, he starts mentioning it as the option where before he was against doing this and the results.... she slowly starts pursuing him, it's simply human psychology, human nature at it's worst and finest:

- we run away from things that pursue us
- we pursue things that reject us
- we rebel against those that control us
- he was afraid to kick her out of the house fearing he would lose her forever
- she kicks him out of the house, he doesn't fight to get back in, all of a sudden she pursues him through texting, phone calls, voicemails, whatever was used
- he pulls, she pushes him away
- she starts to pull, he pushes her away (she's now bringing up relationship talk and making excuses for him to come over so that SHE can write letters for him to read, she would not have wasted the time to do that before)

If he had started doing what we asked earlier, he would have saved a lot of time, but like most of the users on these forums, you can provide them with the logic and sound reasoning behind our advice and why it will work but they're in love with their feelings, they're in love with their emotions and don't want to do anything that doesn't "feel right". But they get all flustered and upset because they are trying to give their WAS's logic and advice and sound reasoning but get mad at their WAS's because they won't listen, because they're in love with their emotions and feelings.

I guess you can call that irony ;-)