No ballot is signed. Any ballots they are counting should not have a signature on the ballot. All the ballots should not be able to be traced back to any person.
No poll worker would be at fault for this.
MAYBE what Ana was reporting on was some ballots that were tallied but unsigned off on by the poll workers? (My guess added in ballots for the recount)
I don’t know how the counting happens but I know when I counted donations at my previous church we had multiple people counting the same stacks of things and signing off on the calculator printout papers.
Provisional ballots must be signed I do believe. Could that be what these 500 ballots were?
The way I read it was there were absentee envelopes with no signature that were to be tossed.