The explosion isn't going to cause significant damage to the landing ship or the landing pad. There isn't much fuel left onboard at that point anyway, so it's fairly superficial. The rocket is scrap if it falls over regardless of whether or not it explodes, and the explosion won't hurt much, so there's not much reason to put effort into reducing the risk of an explosion in a crash. The plan is to eventually land at the Cape once the technique is proven, but there's no need to make a rocket that can tip over without blowing up to achieve that.