The auditors haven't the authority to declare 50,000 ballots decertified and removed from the vote tallies.. They have pointed them out and they know which ones they determined to be likely illegal. Otherwise it wouldn't have been possible to have counted them.) A look at these 50,000 votes would easily show which ones were for Biden and which were for Trump.
It is up to the state legal system (The AG, prosecutors, et al.) to determine whether any votes should be ignored.
There could be votes both for Biden and Trump that should be removed. Using the existing numbers for each side, it would require nothing other than simple subtraction to come up with the correct true number of legal votes for each candidate.
What you've posted here is severely illogical.