You kind of miss the point. He’s not inviting an investigation. He’s inviting participation from people who will stand in the shoes if the government and say that there is/is not legal reason for the government to take this peculiar approach. Getting a whole bunch of people, or a couple of the rght people, to say that this is an inexplicable legal maneuver will support the idea that the flip flop was made not for legal reasons, but for political reasons.
edit: his experience (I’m taking you at your word on that one) and lack of need for guidance strongly suggests that he’s taking the approach I outline herein, ie, he smells a rat on the change on course and wants some other eyes, support, and, potentially, cover on the issue.