I found the "You've been demoted back to the academy. Oh, wait, I went and defended you offscreen and now you're just demoted to First Officer" thing odd. Kirk never really suffers from that demotion, except hanging around in the bar, and it struck me as an odd punishment, even for fabricating a report. It wasn't "You're cashiered out of the service," but rather "Go back to school!" The double demotion seemed like a hold over from a previous version of the script that was downplayed until it becomes a five minute exchange that ultimately has little bearing on the plot of the film.