No clue. He wasnt interfered with. Unless he was complaining about the spot of the faceoff.
I don't know what feed you have, but Locker was saying Holtby did like the fact that one of the Hens raised his arm directly in front of his face and felt it should be called for a penalty. It happened a few seconds before the goal. I feel the goal may have resulted from the fact that Holtby allowed himself to get distracted by that instead of just focusing on the play.
ETA
They showed a replay of it and it appeared it was just an attempt to communicate to another Hen and not a deliberate attempt to get in Holtby's face.