Is it wrong to laugh at this? I think our little ones get away with a whole lot. My Bear hasnt done this specifically, we use the pee-pads, we feed him early in the morning and then again early in the evening. There has been a couple of times when he has not finished pooping and has taken his poop up onto our bed. Yes, it is very discusting. But (giggle) I can't imagine him doing it while we are in the bed asleep. It is kinda funny, kinda.
My advice- discipline. Dogs are pack animals and while with their mom as pups are taught boundries. Otherwise they will take charge as the alpha dog. Naturally someone needs to take charge, no matter how cute they are you should take a stand. Discipline is not a four-letter word. It is a lifestyle.
Hope it works out with your furbaby!