Tony Bramwell's Beatle book discussion continues

Over at this "Bob's Bloggery" post from last August there is still a discsussion regarding Tomy Bramwell's book Magical Mystery Tours and just how scripted the film A Hard Days Night actually was. I contend that Alun Owen, the scriptwriter, wrote a script that sounded just like we imagined the Beatles sounded, based on what I have read and heard (on the DVD of the film, for example) and one anonymous commenter suggests that the script was written afterward to match the mostly improvised dialogue. I'd love comments from people with information other than Bramwell's book or the AHDN film to chime in.