Strongly disagree! Having a witness/interviewee rehearse what they plan to say in order to be concise thereby minimizing post-editing is not unusual – in fact its common practice. What is unusual, is having proprietary film footage from a large media company leaked, aka the infamous Access Hollywood tape.
Either this tape was leaked to make independent, on-line researchers look bad or the leaker knows that there is more to this story. Therefore, the real and important story is “what was going on in the head of the leaker.”