Damien Darhk has a certain stance that he takes up and this is it. Arms slightly out from the body as if he's ready to catch some arrows or toss someone across the room with a flick of the hand.
After what happened to Felicity, Oliver is out for blood. Damien Darhk's blood. It's highly unlikely they're going to stop him within one hour, so what do you think will happen?
Oliver and Thea confront Anarky. Whether they think he's working with Damian Dark or Anarky is just making a mess of things on his own they need to clean up, we will soon find out.