He is not and never has been the type to talk and fight so what answer he has - and he does have one - will have to wait for the soonest calm moment. For now, he has no time for anything but the essentials and the split second he has in which to react to them. In that split second he decides his lefthand gun as the right choice here and stops trying to draw energy from the young man in front of him to draw it, shooting strong cord out toward Toothless's face in an attempt to keep the thing from being able to open its mouth. He won't dodge, won't abandon the heart behind him that way, but he will back along the wall a little ways, try to draw the dragon toward him. If he can make sure it's focused purely on him, rather than on the hearts, maybe he'll be able to lead it away long enough to get rid of it.