@Silverfire: well, have your ruler turn the capital city into a one-region duchy. Or, since you will be ruler soon, do it yourself. Then have his city starved and ambassador'ed into oblivion. And keep having him stabbed. It can work. Just because you haven't seen it doesn't mean it can't happen. I know of two dukes who have lost duchies due to extended wounds in the past 4 or so months.
