right 2boys, if you can manage it, put the hurt to one side and teach yourself to see right through his attempts to manipulate.
You are right, it IS (mild?) emotional abuse. It doesn't matter if he thinks so or not.
Your arrangements to be out of the house fell through - so he is punishing you by refusing to paint the ceiling. This is what he is doing - punishing you. He didn't really want to paint the ceiling so he's finding a way to make it YOUR fault.
You are angry and stressed that the ceiling now won't be painted - so he is punishing you for being annoyed by bringing up something that will sideline you - your df's death. He knows very well you have a right to be angry & stressed so again he's trying to make it YOUR fault.
His attempts to manipulate you would be laughable if they weren't so cruel. But don't get sad, get mad!!!!!!!!!
You didn't have an argument. He agreed to paint the ceiling. He hasn't done it. This is nothing to do with you, the dc's, or your df's death!!!
I'm not saying LTB but: learn about emotional abuse and how to recognise it so you'll be able to pull him up on it every time he tries it. Then, either he'll start having a little more respect for you or YOU will eventually decide you're better off without him.
Either way, you won't spend the rest of your life having your feelings screwed around.
xx