I've vascillated between wondering if Paul was misquoted, misunderstood, or just made things up as he went along. I have sources (books and websites) that range the spectrum on what to make of his teachings. If you want them, let me know.
At least Paul admits that he doesn't have a commandment, but only permission (1 Cor 7:6,25). How many others have added their own judgment believing they had permission? How many others have been misquoted, misunderstood or just made things up? If human nature, being imperfect and thoroughly fallen is any guide, I would say even the best of them have done it. Paul admits it.