Post your most hilarious, most unethical methods of disposing of people that you don't want holding power in your faction. For me, I had a handful of generals who I recruited as client rulers but who promptly got the "Interloper" trait. As someone explained in a previous thread, this can happen if you recruit a client but the garrison of the city you recruited him from is full, causing him to be spawned outside of the target city. Well, crap. Anywhere you put him, he causes unrest as a false ruler, but you can't just disband him. You can't even put him in an army and have him go fight for your country, as any place he conquers will also suffer from unrest until he leaves. There's only one solution: get rid of him.
"But Bri, how do I kill him if I can't disband him or use assassins on my own faction?"
I'm glad you asked, TWC user! For guidance, we need only look to American president John F. Kennedy! I'm not talking about any of his politics or social policies, but the invasion of Cuba that he started but didn't support! You send the undesired leaders/troops to a remote enemy location(preferably an island so they can't escape after the battle) and you leave them to die! Bay of Pigs, Republican Rome Edition!