I would recommend you to take some time to respond properly with close knitted coordination with your supporter.Not yet.
Since you should have gotten extra 50 points for Winkler as you have got for Brandon which would have not reduced your score.
You can also opt a stance to rectify and acknowledge that you choose Winkler instead of Brandon by mistake.
Got my point. That's what I would have done.
This would spare you and they might give you another chance.
Hope for the best.