I have to agree with 'comrade'here. Very rarely in life is there not a variety of shades of grey. This, however, is one of those rare black and white moments.
There was a correct thing for him to do. And an erroneous thing to do. He chose the latter.

I am very sorry you have had this experience, and feel you are most likely in the right place.
Be kind to yourself and someone will be listening if you feel the need to off load.

Take care.