I do not necessary disagree with with your assumptions, but if we look at the dry facts, in the one scene that is left in ESB there is nothing that indicates any change in character. There are no actions or dialogue that would indicate so.
You don’t need to be shown everything on screen. Don’t fall into the Lucas trap.
Well I am not the guy who would need to be shown everything on screen but when it comes to characterisation the only thing that can actually develop the character is dialogue and (even more so) actions. Unfortunately, assumptions do no develop characters.