We don’t know what the cruiser alterations were supposed to achieve. But your charts only show a curve for podium vs. cruiser–which is only going to confirm whatever you pick as a seed location for the shots, as you are using one of the shots to figure out alignment between the tracks and “they” more or less tried to replicate all the podium spacings in the cruiser audio.
Because I let the other sources place TWO shot locations relative to each other such that TOA errors are minimized for all sources and all shots, Cruiser is conspicuous because it won’t go along with the group.
So you gotta choose–five other sources that all agree or one late-released police video that is unlike the other sources in all respects. You don’t need to know why they did it to say they did it.