Yeah - pooing is common with separation anxiety - they'll usually go to the bathroom around windows and doors, or in their crate if they're in there. Separation anxiety in wild dogs is a way to help dogs seperated from the pack reunite with them - so they will make alot of noise, go to the bathroom, and try to escape if confined.
Good luck with Creole! If I were you, I would try medication at this point, since the training itself doesn't sound like it's helping. He could have some hormone inbalance issues that training along can't improve. I don't know about clomi-calm, but there are some other drugs out there also used for seperation anxiety and I'm sure your vet could work with you to find the best one for Creole. Usually Vets recommend drugs along with continued training, with the goal of eventually weaning them off the drugs.
To view links or images in signatures your post count must be 10 or greater. You currently have 0 posts.