I'm just starting out in the lifestyle, but I'm studying stress in psychology, and its effects are varied and wide reaching. People do experience it in different ways, and it might be that janine's sub is just suffering from prolonged stress.

Yes, on the other hand he may be thinking differently about his sexual desires. People change, maybe his submissive nature was just in reaction to something that has now left. It would be interesting to get more information about the relationship, ie. How long total? How long has he been misbehaving? etc.