Just because management says something is gross insubordination, doesn't mean what really happened actually was even failure to work as directed.
Management is often at least somewhat twisted.
Management lies often.
Management members will conspire to make things up.
Management often has an irrational belief of the range & scope of their authority. Power outage district vice president shows up. Operations instructed to call power company (Operations Manager calls SCE ) Mr Maasie wants the power turned back on now !