Greg,
I have been starting to train with Eric and have many of the same questions that he has.
The strike of wrath, "zornhau" (zorn=wrath, hau=strike), is a diagonal overhand cut. When spoken of it usually refers to a right-to-left cut, but everything can be done on the opposite side. When "he displaces it," that can be understood as a counter cut. He displaces the zornhau by cutting against it.
What do you mean when you say cutting against the zornhau to displace it. Does that mean you are making a cut that interferes with your opponents blade therefore displacing it, or are you moving out of the way and counter striking in order to counter it.