The best way to avoid DQs is to allow participants to fight without a referee.
They would post their scores on a forum. It would need to be approved by either a referee or the losing participant.
The best way to avoid DQs like these is not to put a complete dm'ing event like this in 1 weekend, which was originally planned.
But then again, I got DQ'd myself because I forgot I had other plans, which is only my mistake, but only THAT evening I wasn't available. I could've faced Eddy a day later or something.
Funny how Eddy himself was hindered from playing in the next round.