@Kelnor gives a masterclass here in the concept of OOC vs. IC feelings and IMO it raises broader points about what the point of Command is.
If Slaughter's player acted within the rules (which they did) and improved the quality of the round (which according to the two main parties involved in this 'overstep', they did):
That's awesome. They played their role well. As long as it creates a better story and follows the rules, I think it's awesome.
It can be organizing some kind of training, event, having a meeting, putting someone in line, being out of line, making someone challenge their beliefs, and so on. The possibilities are almost endless as this is a roleplaying game.
Circling back to the first sentence, Kelnor demonstrates perfectly that your character doesn't have to be having a good time for you as the player to be having a good time.
I, among a lot of others, enjoy heavy and nuanced roleplay. Constructing a character and then immersing yourself and thinking as them to decide how to react to given situations.
A great point of information from @CatsinHD as well about the Chain of Command.