Yes, Thor does the poop walk.
He is such a darling dog, he's even cute when he's pooping! He hunches over with his little tail sticking straight out. He always poops with his back to me, and looks at me over his shoulder with one eye, to make sure I don't leave him in his compromised state I guess.
I always thought walking must help push things down. Kind of like toilets in other countries, where you have to squat.