I didn't interpret the shooter's movements, after landing, as a staredown. To me, it appears that he momentarily glances towards the Lead official, and then at the defender, and the loose swing of the left arm denotes little if any muscular tension in his shoulders, which would usually be noted in a staredown / "I just showed you up" stance. He almost looks concerned about the welfare of the defender - perhaps because he knew he had clipped him in the head (?)
(Yeah, I do get overly analytical at times . . .)
