No, you can put him back in as soon as the young leave her back and are in their own tank.
I wouldn't suggest putting him back in if you decide to leave the babies with mom.
By the way, you don't need to start a new topic for every question you have if it's on the same basic topic.
If your emperor scorpion stops eating, don't panic.
Be nice -- you were a noob once, too
"Never ask an engineer to explain something, because he will."