"I tried to grab him," he confesses, admitting his failure. His tentacle yanks and he lets go of Sans immediately, his voice urgent, "Go, go!

If anyone could reach Papyrus in a hurry it would be Sans. Family was more important than anything else here and he drags himself to his feet while helping Eruka up if she needs it, his eyes taking a moment to scan the surroundings and take what he missed in the moments he was momentarily knocked out of it from his injuries. His body feels knocked around but the healing draught at least stabilizes him. He'll worry about self healing later when they can take a moment to rest. First thing he needs to do is get off of this water.