I agree with you.
Once a invalid ballot is mixed in with valid ballots and tabulated,
it is impossible to “subtract” that particular vote from the tally.
Once a invalid ballot is mixed in with valid ballots and tabulated,
it is impossible to subtract that particular vote from the tally.
Which is why all the ballots must not be counted. Blame the elections officials who oversaw this mess. It’s harsh, but there is no viable way to fix this situation.
The legislature needs to think outside the box and schedule a special election for that county. Period. It’s a safe punt and it would follow the legal process the same legislature passed so as not to disenfranchise a single voter in that county.
The media and Biden will howl, but in the end the voters in that district will have their chance to speak to clear up any ambiguity.