If they beat us 2-0, and there was a small technicality for one of the elibility of their players who didn't have a huge bearing on the match (i.e. they haven't just played a Brazilian striker who scored a hat-trick) then no, I wouldn't be baying for blood. I'd say we shouldn't of lost to them in the first place anyway.
Something is real dodgy here. If we did wrong, then so be it, but the process doesn't sound close to fair.