oh FOTH, we are many of us suffering today by the sounds of it.. just being here, thinking kind thoughts, even if we can't express them is support.
barbie, you say you mirrored him with shouting,aggression etc? we all do that, we are worn down to such an extent, doubt our own skills in dealing with things, so we adopt their mannerisms, mirroring themselves back at them hoping that they will see we are like them, so we are no longer shouted at for being us. 
we kind of discussed this at group today. As I said, i found this week hard.
Next week they have even warned us about ... it's going to be REALLY hard.
It's about the Bad Father. The one that tells the kids shit about us, makes us do things against our instinct, lying to them about him, everything and everything to cover up our guilt. That guilt of realising what we have saddled our darling children with as a father.. That one rips the very heart from me, I tell you.
Bugger, these women know what they are doing/talking about. They know it's going to hit hard, they know it's going to hurt. I barely held it together this afternoon over nothing, I'll ball next week. I'll cry even thinking about it.
I suppose the only 'comfort' I can take is from the fact that it's highly unlikely that I'll be the only one.