This is semantics to a degree, however there is some validity to the opening post. I don't have my KM book handy, or the notes from the KM School from a couple winters back, but the wording on investigating wrongdoing as it pertains to blood transfusions is to me at least, very obviously worded so as to be a loophole. Disassociation voluntarily as a result of consenting to a blood transfusion is only to be the case for the brother/sister in question, if they lack remorse for their action/inaction. For instance, the first investigate situation I dealt with after getting appointed was related to a sister who had multiple surgeries that required blood transfusions. An older brother who's one of the HLC's heavyweights in this area, suggested it would be good experience for me to tag along with him in investigating the matter.
He explained to me beforehand, that we were to ascertain whether blood was adminstered with the sister's consent, or even someone elses in the family, such as her brother specifically. He also schooled me that even if either did give consent to the transfusion done, we need to verify remorse for their action, and if that's the case, provide some counsel and move on. That was directly in harmony with what's in the KM book, and what was relayed at the KM School for Elders. Well we met with both the sister in question, and her brother, both together, and also seperately to ensure that their stories jibed, which in fact was the case. We reported it to the rest of the body, and moved on. Case closed, and forgotten.
Granted, what's on paper as far as policy & procedure as directed from the WT, is subject to interpretation by individual congregations, as some elder bodies are liberal and mercy leaning, while others might be ultra conservative and have a tendency to lean towards punishment with a misguided zeal for keeping the congregation clean. So what happened in our case my not be how it always plays out.
edit post: I don't believe for a second that this policy will ever be rescinded. I know Randy suggested that after Darth Smalley and Fred Rusk croak, that it's very possible the policy will be rescinded, but I can't help but think that the WT would leave itself open to lawsuits.