Is Jason Sands really the whistleblower in the new James Fox documentary? Why did he appear earlier?

Wouldn’t that break all expectations for the documentary, since he would be the main star?

This would put James Fox in a difficult situation, especially since the whistleblower’s reception is already not good.

I’ve only heard the story superficially and I don’t want to be unfair, but it seems like there are already some giant red flags: