I would've left him at being spat at stage, let alone anything else. No respect and you deserve so much more.
Zeddy, please think very carefully about this. I know it seems wonderful that he has agreed to get help. But what do you do in the meantime? What happens if he has a really bad day and takes it out on you again? What happens if therapy makes him face stuff he doesn't want to and then he takes it out on you - the person making him go? How long do you give him to 'change'? I was quite serious when I said it can take a long time - and sadly, he may never improve, despite the promises and help. Can I ask, what happens when he loses his temper with other people - does he hit or spit on them too, or are you the only person he shows this too? It may be the answer to if it is an anger problem or not...

So how long do you take more beatings for? It's like a carrot dangling, you may get in the habit of thinking that its ok for another beating because he is in therapy and he promised to get help to change. If you are intent to stay, please promise yourself to get out the very next time it happens, and as you say, no more sweeping it under the rug.

Also, I know you have no support network but please don't let that be the reason to stay. Am glad you're going to do some research on places to go, at least if need to go you can do swiftly. He really should not be in a relationship the way he is, he needs to be alone to work through these issues. Until he can control his anger, he is a danger to you, am so so very sorry to say. My ex was hit just once in the head outside a pizza place by a thug and he suffered severe brain damage - and has lost his quality of life completely. It only takes on hit in the wrong place or one thump too many to give you some very serious damage - and then of course is your emotional damage too. Please please please look after yourself.