The thing is, Docker, that if he limps back in, looking all sorry for himself, he'll use every trick in the book to make her feel bad for poor little him and not chuck him out. And then he'll be the invalid, delicate and needing of shelter - give it a while and he'll 'just be going out to try and get moving again', getting ratarsed during the day and passing it off as 'I'm tired, I'm in pain, you want to keep me a prisoner, you're abusive/picking on me'.
Alcoholics are very intelligent - in manipulating, gaslighting, bullying and using every psychological trick in the book to ensure that they get left to get shitfaced in comfort.
This is likely to be, if he comes back, the point at which he switches to all day drinking. And a bit of a painkiller habit on the side.
The best way to do it is to cut off from now. He wants the phone to pester for money, he wants the money and fags so that he can try and get out 'for fags' but buy a couple of cans of high strength booze. He wants, he want, he wants. It's all about what he wants.
It's time for what she wants. Which is to not have to deal with his shit anymore - for her and her son.
Not having anywhere to go back to will put him in a position where he has to seriously think whether he can go on like this - he's had a pasting, he's fucked up his ankle, he's fucked up his marriage and is on the cusp of fucking up his business. Without her coerced into performing as the Dutiful Wife, he has no choice but to see that he has a choice - does he accept that he needs to change for himself (as the welfare of his wife and child or employees certainly isn't of interest to him) or does he limp out of the hospital on his own in a week and go straight to the pub? Either way, things are changing - because she won't have him back. He's on his own, and whether he uses that as the reason for sorting his shit out or as further justification for being a violent prick is neither here nor there.
He's not her problem anymore. He's his own problem.