The father of a newborn might be an equal parent shortly after the baby is born - but he fucking isn't while the baby is BEING born! It's not HIM giving birth, it's not HIM doing all the hard work and being in pain, is it?
No!
So at the time of the birth and immediately afterwards, there really is only ONE person who matters in decisions and that's the new mother.
People who can't get their heads around that are a bit weird, IMO.
OP - YANBU. Your DH sounds like he behaved like a massive wanker last time, thanks to his inability to control his reactions to his mother - can't see that it's going to be any different for you this time around and it would be unpleasant for you to have him repeat that behaviour.
Perhaps you could phrase your response to him along the lines of "your mother can come if you can control your reactions to her and refrain from behaving like a massive wanker, you know, like you did last time".
(although, frankly, if you want a couple of days without her, that's down to you. She could still come to the hospital and he could take the baby to see her so she could get her Viewing in, without inconveniencing you in any way).
My MIL is one of the good ones, in general. Didn't stop me wanting to scream sometimes when she had hold of DS1 (she stayed with us for 6w, 1 prior to his birth and 5 after); nor wanting to do something truly horrible to DH when he said things like:
"I wish you'd make more effort to entertain Mum" (Fuck OFF!)
"Mum doesn't mind if you breastfeed in front of her" (no but I do and frankly that's more important!)
Anyway. Your DH is the one who needs to sort himself out, and I hope you can get that through to him before the baby is born. Good luck!