It sounds like the right thing to do for you at the moment. You showed real strength in taking that step and I think you executed it really well. The next few months are going to be hard for you, keep your strength up, look after yourself, eat, exercise etc. I'm really sorry to hear about your job too.
Here is a post I found a while back on going dark, I wondered if you might find it helpful.
"There are two very different reasons to consider for going dark: 1. Because you want it to show your spouse what life without you is like, and to get them wondering what you're up to. 2. Because -you- need time away from the emotional drama of regular interaction with a situation that causes you distress.
Either reason is valid, but it's important to know, I think, which is the main goal of going dark in your specific instance. If you know what the goal is, you'll be better able to determine if going dark is accomplishing what you need it to, and when to stop...
Think carefully about what you want to accomplish if you go dark, and if you do ask yourself every day if it's still moving you closer to that goal. When and if it isn't, adopt a new strategy. "
Also something to think about, would her having another man be a deal breaker for you?
There are many many DR techniques you can employ here. It seems this is a real opportunity to bond with your children and be a great Dad - if her complaint was neglect are there any ways in which that may be true? In which case 180 time... why don't you try setting some short term goals? Really easy to do and will help you feel so much better.
Lastly, she will realise the grass isn't greener, they always do. They have built up in their minds a picture of what life will be like once the LBS has gone - this picture is never the reality.
