This wording is mentioned specifically in the Elders manual with respect to blood transfusions. It is part of a larger protocol made in response to governments threatening legal consequences if JWs are not allowed to have a blood transfusion. In response JWs effectively lied under oath and said that there are no repercussions and it is a personal choice, and meanwhile they 'discontinued' judicial committees in such cases, making it seem more informal but for all intents and purposes it is still a JC. If the person ISN'T repentant, instead of disfellowshipping they will regard the person as having disassociated themself whether or not that's what they want, and in any case the announcement at the Hall will be the same: "so-and-so is no longer one of Jehovah's Witnesses".