Hope you have everything you need for today by now?
And that you can summon the energy and the positivity to make it happen. 🫂
(Please ensure the party is noisy.)
I wouldn't do any passive agressive going on strike or silent treatment stuff.
See how he behaves today - and take notes.
As soon as he's over the hangover, could you arrange for DC to be with someone, and have the conversation with him in private?
This is going to be incredibly difficult - but stay calm and control yourself. Tone, body language, words etc.
Set out exactly what he did, how it made you feel, how serious it is, how he could have killed someone.
Give him your ultimatum, your expectations for his future behaviour.
This is relationship ending or mending time.
Observe him.
And this sounds odd - but I would secretly record the conversation, and his reaction. You're going to need records.
Be prepared to be accused of nagging, being unreasonable.
Going forward, get him to have the carpet professionally cleaned.