At best it seems like ill-informed micromanagement: I assume that a 'case coordinator’s manager would not be pleased if they thought that they did in fact have a dead patient but coordination of a retrieval team had fallen through, and would want the coordinator to do something about that; but failing to understand that the retrieval team fell through because the patient wasn’t dead would make your management of the situation deeply counterproductive; but more in a ‘professional competence issue’ sort of way, rather than a ‘concerning medical ethics’ or ‘trying to have someone murdered because it makes the paperwork flow easier’ sort of way.
If the supervisor was aware of the circumstances behind the change in plans(surely this can’t be the first time that someone who initially looked pretty dead turned out to be a bit peppier than expected?) then the room for anything but really damning judgement narrows considerably.