Hello Zindi ,
Well first thank you for your quick reaction.
Second , I think that in this situation no one can really know his real ranking in the leadeboard , even if you will check every notebook for the top 10 in the leaderboard after the competition but every competitor have to know it's own ranking and check others improvements and see it's situation in the leaderboard and how much he is far from others . So , I propose that you delete completely this leaderboard so that we all have same chances .
In case the LB was not reset I am kindly asking everyone in the top LB to publish their solution, to make everything clear and visible to each other.
I think reseting the scores should be competitors personal decision and not Zindi's.