Yup, I think that sums it up. After an hour of rest, Dolly will link up with Janitor so they can review the info together and plan their next moves. She'd obviously review what was on the burner with an interest towards astral security. If there's a gap in that, the job can be as simple as possess, drop ring in a secluded location, then depossess a few minutes later and pick up the ring. Other than the summoner, possessed vessels don't have any recollection of what happened while the spirit was in charge, so he'd just eventually notice his ring was missing and wonder when he took it off. If he was possessed while unconscious or in an altered state of consciousness, he might not even have any reason to think anything out of the ordinary had happened.
But, in this day and age, I suspect that there is a strong astral component to his security.