[Castiel really doesn't have a chance to register that he's been struck until he's already on the ground and being dragged back into the building, not unconscious but incredibly dazed; he doesn't even feel the pain yet, just dizzy and confused and wondering what had happened and why he's on the ground and moving at the same time.
But once they're inside it's like a light switch flips on and he twists around as he tries to reach for an arm or a weapon, whichever is closer, so he can have leverage to get himself into a position to strike out at Silva. He's not accustomed to fighting while human and without a weapon, but he's still entirely capable and willing to defend himself, and his former calm agreeableness is all gone and replaced by will to fight.]
no subject
But once they're inside it's like a light switch flips on and he twists around as he tries to reach for an arm or a weapon, whichever is closer, so he can have leverage to get himself into a position to strike out at Silva. He's not accustomed to fighting while human and without a weapon, but he's still entirely capable and willing to defend himself, and his former calm agreeableness is all gone and replaced by will to fight.]