And again the camera seems to focus on some strange motions surrounding the red folder right after he walks away from the monitors.

Here's the video with the ambulance arriving, which immediately precedes Trump's loss of interest in the monitors.

Maybe that's what was in the red folder—the orders/plans for the Ashli Babbit false flag.

It would explain why Trump stayed in the tent (pretending to not have arrived until after the ambulance pased by the surveillance camera) before he took the stage... and why he held up the folder at that time. They knew what was planned! They needed to hold the crowd so long that the plotters would go ahead with their plot while Trump was still speaking. It could also explain why Trump's speech lacked the normal focus and seemed to ramble... he was just keeping the crowd in place while playing the role of "defeated" general, so the plotters would think their coup was working.

But now Putin has a copy of that folder and can do a reveal without involving Trump directly.

That would be pretty slick.