Well..i always heard if you have nothing nice to say don't say anything at all....BUT i gotta say something and i hope you won't be offended by what i'm gonna say.
I've never heard of such a selfish thing as what your husband did to you and your kids. Attention? Sounds like he is pretty immature, once kids come along most of the mothers attention is on them to deal with everything from school, chauffeuring and what not. Then to tell you he is moving in with his mom to get a job instead of being man enough to tell you why he moved? Unexcusable in my eyes.
Seems like he's more worried about himself than to worry about his children and wife.
I can't tell from your post what your plans are regarding your marriage and whatever you choose to do i wish you the best of luck if it be counselling, reconsiliation or seperation.
Your kids will be fine sooner or later no matter what decision you come to, mine were when i was in a similar situation.
Here is what i suggest:
Get on foodstamps
File for temporary support
Find a job
Accept any help that is offered to you to make this easier on you
If you have family nearby see if they can help out watching your children while you work
years back when my husband and i seperated a friend let me move in with her so i can get on my feet, i had only met her twice before, we became friends online..i stayed 6 months at her house completely lost, depressed, then i had a family emergency and had to fly home to germany, i lost both parents in a month, my husband then was a complete jerk while i was over there. When i came back my anger toward him made me focus on getting out of my rut, i got a job, moved into an efficiency apt, it wasn't easy but things got easier after a while..years later i met a nice guy and we've been together now 6 years, bought a house together and my kids are grown responsibe (ok well mostly lol) kids. One thing that i regret today is that i always wanted to keep the peace with my husband..never filed for temporary support lots of times i never got a dime, but he would step up if i was really really in a bind. He was never a bad dad, i never kept him from spending time with the kids, the issues we had were between me and him, not the kids. Looking back now i could have made things easier for me and realize my struggling and trying to keep the peace instead of fighting what i was entitled for wasn't really fair to my kids.
So keep your head up, things will get better no matter what the outcome might be. I'll pray for you!
German and taking over CVS and Walgreens one coupon at a time!