I assume that’s what happened. It didn’t appear that he swung the sword at all, and I see no other way to explain it. I could see some ridiculous/awesome/funny kills coming from this.
EDIT: Darn, it appears that he just swung his sword after all. A little hard to see in third person. Sorry for the false alarm guys. I still find it interesting that he could swing his sword mid-thrust, so I guess that could lead to some cool/funny kills instead!