Sanya uses momentum

Sanya spread his empty hand to one side of his body in mocking invitation, and said nothing.
Ursiel roared and flew at Sanya. The big man extended the saber, and the weapon took Ursiel high on one shoulder, plunging through muscle and sinew. Sanya braced himself as the demon's body hit him, and though the impact drove his feet back across six inches of concrete, he held it up and away from me.


Death Masks Chapter 6, Page 63