I personally feel that users in a campaign should respect the company that hired them and make a post here and there in a company thread, but as multiple others have said, you cannot force or ask that of the users. Think of it as job protection, the more exposure a company feels they are getting, the more likely they are to keep a campaign going.
Regardless, the manager isn't doing anything wrong here.
This topic is to clarify the matter and not to accuse the campaign manager. He may not be aware of it either, and in order not to cause this to ban accounts that may not be aware that this may be a violation of one of the rules on the forum.
Uh huh, that's why you are hiding behind an alt like a pussy.