If the ballots are legitimate then chain of custody should prove it. Why wasn't that done? Much better than an ever changing contradictory 'story'.
They have the entire thing on video. Cameras were running constantly for hours and hours. The ballots were opened and separated from envelopes by poll workers, with the ballots placed in the designated containers for counting later.
Later, those same designated containers were opened by poll workers and the ballots were counted.
The only issue in dispute is whether or not the closed for they night. It looks like one person said they were closing and was overruled shortly after by someone else.
No observers were forced to leave. Their affidavits say that they heard someone scream that they were stopping the count for the night and so the observers left.