That's pretty bad. When I did my test - OK it was years ago - the examiner asked why I'd taken a junction in a rather odd way. It was right turn at traffic lights and I'd gone the long way round a car coming the other way so as to pass behind it rather than pass on its passenger side. I explained my reasoning - which was that the car was a driving instructor giving a lesson to a new driver, so I argued that the driving instructor would teach the student to turn as per the highway code which said to always pass driver's door to driver's door. (Damn stupid of course and no-one ever does but that was the rule at the time.) At which point the examiner said - OK, that's a fair answer, and that was that. Mind you he then told me to ignore certain ways I'd been taught to ride because although they were statutory for the test in his opinion they were in fact 'bloody dangerous'. Which reflects your experience - except you got a jobsworth for an examiner. What did your instructor say about it?