OP's first paragraph said she and her counsellor both agreed on his abusiveness. Him screaming at the DC, and stonewalling her for 3 hours afterwards is text book abuser.
You are lucky enough not to know what abuse is. I am genuinely pleased for you! 
When you ask a normal, non-abusive male to stop doing X, Y or Z as it upsets you, offends you or makes you feel bad, they stop. When you ask the same of an abusive man, they don't. They may pause for a while, but they go back to it, cos it works!
You can believe all you like that you can always negotiate with everyone on this earth, and so far you have been lucky enough not to have this schema challenged.
Very often victims of abusers are naturally sunny, cheerful, happy souls that always see the best in everyone. This is IMHO what I think abusers lack, what they envy and what they seek to steal by trapping it, oppressing it, controlling it and diminishing it until THEY look better.
Lundy Bancroft's Why Does He Do That is very clear on the matter, that counselling for an abusive male is often detrimental and usually pointless.
You can appeal to the better nature of a non-abusive partner. An abusive partner doesn't have a better nature. Only a façade that they use to connive and reel people in. They are only nice for a reason, it's usually for effect, for show or for their own gain.
You start asking an abusive man nicely to just be nice, to stop doing whatever torture he's concocted to make you feel uneasy, sad, hurt or fearful. You think that perhaps (as you are told you are dim, worthless and a PITA) you are not able to express yourself correctly, so you find more and more expressive, elaborate, softer, sweeter ways to get your point across. You feel sure that if he could only understand how unhappy you are, he'll stop. he'll return to being the truly wonderful man you met, the one that swept you off your feet and turned your world upside down. You spend your life chasing that particular dragon, never to find it.
There really IS no point in negotiating with these emotional terrorists. Trust me. If they want to change, they can. Thing is, they feel so entitled to behave as they do, they won't change in the hugest of vast majorities.
Lundy Bancroft states that there ARE men that do change, but they are rarer than hens' teeth. Usually only when the abuser's entire family/friend/network have rejected him due to his treatment of his victims will he change, but even then with huge amounts of effort, time and a real desire to want to be a better person. Most of these guys don't care about others enough to want to be a better person.