Killfacer: People's opinions are colored of whether they could've been on the disadvantaged side or not. I agree Poland is the courteous party here, portraying it as "Poland screwing Brazil" is certainly straying far from facts, but I didn't see many that did.
My opinion is, choose the alternative that minimizes the amount of people feeling butthurt in the end. Due to my prediction of Poland winning again, I believe that would simply be replaying the match.
Again, this is after the fact and has no bearing on what's already been decided.