I would like to suggest that flag creators create TWO threads, one which has open discussion upon which the flag is linked to, and another self moderated thread where the flag creator and the harmed parties build a log of nothing but factual information.
It's not a bad idea, but if the flag creator moderates the thread, there would be accusation of bias by the party the flag was created against. And those viewing the thread may be getting a one sided view of the argument
Of course, but they still have every opportunity to defend themselves not only in the flag thread, but if they like with their own self moderated thread. That is the point of combining the two ideas.
Now one would have to wade through two threads which could both be biased. Accusations are delicate and one may have to go through all the bickering if they are to make an informed decision.