Thing is TW, the job will impact on all of you, for the greater good surely!
TBh, you know in your heart of hearts that if you take this job, it won't stop him hiding away in his office, at best nothing will change, at worst he'll immerse himself more.
I wept too when I read the Nice Things DH Does Thread. My 'H' doesn't do anything, OK apart from what AF/SF said, but even that, I feel is more for his benefit and not mine, I don't feel a part of anything physical.
Call his bluff, take the job, but for YOU! Can one of the other school mums pick your DC up and deliver them home?
This is all about control, he has lost his edge, so he'll chip away at yours. Don't let him.
Oh and if he begrudges you a life, then tbh you not only should threaten him with a divorce, you should flaming well follow through with it.
Your DH has checked out and is resenting being asked to do anything, I have the same problem. Nothing, it would seem, is his job, he is a shit father, does everything I despise. Seems to hate it when we have fun, DS and I, but won't shake himself to take us out, we have to arrange it and then it can't be too complicated/complex, cos apparently we are not worth more than 2 activities in a single day... once in a lifetime... a farmers market, 30 mins max, a meal and a film....
I ended up telling him to stick it and went out with a friend of mine.
And he wonders why I hate him....
All this AFTER a dreadful existence where he routinely abused me emotionally, isolated me from all form of life, in his country, stopped all kinds of fun, hit me a couple of times, witheld stuff I needed, humiliated me in front of literally everyone I knew... for 3 years.... Now he wonders why I don't let him get away with anything with me anymore... 
Don't let this man dictate the terms of your life, he is not acting in your best interests and he is not qualified to do so.
If he chooses to leave/split because you want to get a job and help the family out, then so be it, he is not worth fighting for.
The sooner the better and then you can find a decent man to do stuff for you that was on the Good DH thread, and one that thinks that you are never too old for a good story before bed...
Does your H ever listen to his sad pathetic little self?