@kestas: This seems like a difficult change to make mid-tournament, and if it's completely un-guided, leaves open the possibility of all sorts of messy things. For example, if Lando decides he wants to attack me as much as possible, as I understand he it could choose to CD me in any games I might be doing well in and leave me in any games I might be doing poorly in, on the theory that it hurts my points, GR, etc. as much as possible. Unless Lando is my direct opponent, that would presumably not fall under "don't use the software to gain an unfair advantage". And then my only recourse is...that I don't sign up for a future tournament with Lando as TD?
The point is, we didn't sign up with this rule, and some of us might not have signed up with this rule. I think it's a reasonable rule to write going forward, but if you are going to institute this rule mid-stream, then I think it's only fair to give every remaining player a one-time chance to immediately withdraw and leave all of their games, and if they choose to stay in, then they're agreeing to a Lando-run tournament. Given such a choice, I would certainly choose to withdraw.