I posted something similar to this on Yoyowife's thread. I was thinking about her sitch and yours when I wrote it.
I've been thinking about these WAS's and how they go off to do their thing and whatever they want, and they assume that everyone around them is standing still. They can go off and have the affair, and when they are ready to come back, everything will be the same. No consequences.
But you are there with a surprise. You aren't the weak woman who he left. You are changed. And the kids are changed. And no one trusts him. He comes back and you aren't jumping for joy.
Now you rule the roost, not him. He just doesn't get it. He needs to do more than just show up. He needs to change. Your H is extremely resistant to change. Can the counselors get him to change? We'll see. But if he can't do it for 7 weeks, he can't do it for the rest of his life. And you are young. This is no time to pack in your hopes for a happy life. The ball is in his court. He can hit it, or he can let it go by. But it is up to him, not you, to take your hands and look deep into your eyes, and say "I will do what it takes to keep you, because you are valuable to me."