But he had a choice.Even though Asgore has told him that it is his job to destroy the barrier, he still wanted to make sure that he didn't have to kill a human again.Also, even after he cut out the bone from his hand, Aplhys offered to help him put them back in place. He didn't have to torture himself, but for him it was "the only way"Wasn't his goal to stop Asgore from killing people and stop the suffering of monsters? Yet he still decided to put Sans and Paps through so much pain in hope of finding a way to break the barrier.He could have stopped Sans and Paps from suffering ( like his original plans said ) but instead he decided to experiment with them.So yeah, I still hope he drowns