When you gotta go, you gotta go. lol He was trying to be neat for you. I have a few dogs that still can't make it through the night without peeing or pooing. I have potty pads in my bedroom. As for the playing and nibbling on the poo, try adding a little pineapple juice to his kibble each meal for two weeks. The pineapple juice will make the poo taste bad and should stop the behavior.