I think it explodes and takes out the boat if he dies. Chuck doesn't want a boat full of people getting back talking about survivors of 815 and a mystical island if the mission to recover Ben fails, so it makes sense to sink the boat. Hurley and Ben's picnic was great. Also "so this is where you shot Locke and left him for…
That scene was also my favourite and could potentially go down as one of the great exchanges within the whole show. Perfectly filmed and acted. Not a fan of the direction of the show right now. They are definitely building up to a "blow the island up" finale. Sayid will ferry the Oceanic 6 off the island and reveal to them…