If Spock had played at that, Khan likely would've fired weapons, the vengeance probably had the capability of slicing the Enterprise
into pieces, if so, he could've potentially separated the torpedo tubes from the primary hull of the ship, let them float into space, to be beamed to the Vengeance, there'd be catastrophic damage to the Enterprise
and Spock would be out of options. The Torpedoes would likely have damaged the Vengeance, but the Enterprise
would have been beyond repair and ended up crashing to Earth, possibly disintegrating en route given that this would've exposed the inner hull about half of the ship.