no probably not but a good interviewer should phrase questions so they have no valid excuse not to answer, when someone is going to spin and evade during an interview everyone listening should be fully aware that the person has just being spinning and evading. When someone says they can't answer because X, then remove X from the equation and they will have to come up with another good excuse very quickly or be shown up.
Tim Fisher has come out of interviews over this whole mess looking much better to the general public than he should of done, every interview his lies and spin should have been called and he'd have been humiliated every interview.