Lately, I've been contemplating breaking my subordinate's spirit.
Why would you wanna break his spirit?
I don't want him as my subordinate anymore. I'm hoping he'll take a hint and move on.
Even though you may not want your subordinate around anymore, you should not break their spirit. It is wrong to break someone's spirit for your selfish reasons.
I need to get him to leave anyway, what's wrong with me trying?
Breaking someone's spirit for your own benefit is selfish and cruel, and there are much better options for you. If you don't want to work with your subordinate anymore, see if one of you can get a transfer. If you break your subordinate's spirit, they could have lifelong trauma from the experience.