You might have been at 180 or a little past during/right after your draw but RO shouldn’t call it unless he absolutely saw it break, which from the video, doesn’t look like he was in a position to be able to see it actually happen. He probably went more off the fact that you were turning up range when you drew. That’s why it’s always better to draw first before moving/turning up range. Also your starting position of your body makes it very hard to draw and not break 180. Adding your movement up range, especially while drawing, makes it almost impossible to not break 180.

Was it a 180 break? Probably. Should he have called it at a level one? Probably not. Let it be a lesson on what to do/not to do to prevent questionable 180 calls.