Was it ever proven that Tojo was behind a plot?
Wouldn’t surprise me, those Bushido loving military personnel were crazy enough for anything.
I know some officers wanted to take Hirohito prisoner and pressure him into urging a guerrilla war.
Some junior officers tried to break into the building where the recording was kept and steal it.
Crazy things happen when a war is winding down.
No less than Admiral Ugaki led about sixteen zealous flight cadets on a final kamikaze mission the day *after* the surrender was announced.