The good thing about the forum is the robust exchange of ideas. I think it is not unreasonable to discuss the spell written in the Original Post in the wider context of the order, and the morality of these kind of spells.
I agree there are some magi who would happily do anything to themselves and their apprentices, however, it takes a certain mindset to mess with a mind long term. I think whenever anyone is thinking to mess with a mind, it is worth considering what kind of person does so. The answer may well be, "my character", however, it is a conversation worth having.