I have a better suggestion that should help prevent any future mistakes: Let's just all stay here and carry on the discussion on the unmoderated thread.
Agreed. This is what I recommended in March 2014 about the use of self moderated threads.
*This was in response to some racist posts* Btw, the thread is self moderated, do you think we should remove them - or it will make more damage and we just should ignore them?"
Typically I'm not a fan of self moderated threads as it can mask what is really the feelings of the experienced members. That's only really a factor on preorders where scams are rife and the newer buyers may not be as alert. In your case this will become important if/when you have any unit issues or delays, its important that you don't try and silence negative opinions.
For this racist stuff, ignore it for now as its very low volume. No one is commenting on it nor is papamoi returning to this particular thread. If it continues then you remove it yourself but leave a post when you do saying "x posts by y person were removed because we believe they were OT to bitcoin mining and were potentially racist". Then you can't be accused of anything.
But for now, ignore it.