Yes, marmajam, for what it's worth, that's what I think too. Leave, and then reflect on the relationship. Having read all your posts, I personally (and this is only a personal opinion, based on what you've written) think that your thought-processes are inhibited - probably because you are in a situation that frightens you.
Personally, I think you would gain nothing at all from couples counselling and it could, in fact, be dangerous. I also feel (and this is only "feel") that clarity will come with distance, as you feel the space to think and reflect. I can completely see that you need a degree of clarity in order to be able to get out but I also think (and again, just i.m.o.) that you shouldn't wait to get "full" clarity before going. that will just keep you there.
For what it's worth, I find it a bit (only a bit, but a bit) worrying that you focus on who was hurt in the hitting/glass-in-face incident. I agree with garlicbutter upthread - that is no way to sort out an argument - time to go. It's enough. Now.
I worry that your questioning is going to keep you there. If it's questioning/awakening - that is good. But if it's a kind of questioning that puts off the moment of seeing the solicitor, CAB, bag-packing, that's not good.
Just my opinion.
Dittany - am I included in the "needling"? You do realise that if I am included in that you are basically calling me an abuser (someone who inflicts violence, even if merely verbal, on a woman) simply because I asked if we could try to keep things verbally non-abusive?