My understanding used to be that the scoring workshop was just a workshop on developing the scoring plan and training the scorers for the scorers to score the questions on their own afterwards. Apparently all questions are scored during the workshop itself.
So the only way to finish the scoring by Dec 5th would be through remote scoring, scanning for the second scorer. In cases where the scoring leader has to be the third scorer and cast the deciding vote, it may be either way - score the hard copy or another scanned copy as they do not get to see the original two scorers work.
All things considered, I don’t think the results would be out before the latter part of the third week this year. A holiday gift for 4 out of 10 of exam takers.