I would go back to the basics and leave the crate in the bedroom. And once he is calm, start moving the crate towards the door. Then outside the room (still in view to see you) and so on, gradually moving to the desired spot you want him to sleep. Patience is key.
My B, Gizmo (is 1 years old) will very often sleep in my bed. But if I want a break, he will happily sleep in his crate.
The loose stool/pooh, could be a result of him being so uneasy/nervous. It does not take much for puppy's to get loose pooh.