It doesn't take corruption to clarify or correct something that is incorrect. Looking only at the two or so pages from the transcript someone posted about 15 pages ago, everyone was wishy-washy and bumbling, but in context it's clear that the recordings were not being admitted into evidence at that time. The prosecutor said OK but I might use it later. If she didn't, she didn't. And as the motion mentioned, the Order didn't mention either of the recordings when it listed Exhibits. A motion from the state to correct the record they helped to confuse is appropriate.
Another alternative on the "it's a cover up!!!!!" side is that everything was so awful in that home that people might be outraged after seeing it that the only thing that came out of it was probation and dropped charges (criminal and CPS).
Sheriff might also not want his team to be shown all over media, critiqued, criticized, mocked, threatened, whatever - and possibly people flipping out about normal police interactions, either "omg they had guns drawn," or, from the other direction, "those people would be dead if they werent white and well-off.". Or he's a sap for kids.