If the 9:00AM appointment is a recurring one, it might not show up in the output in the place you expect it to. Is there anything suspicious if you look by the subject line?
If you are comfortable using its interface, MFCMAPI might let you find and delete the problem appointment too.
Also, the reason I was asking about your log levels is I thought you were seeing Ref IDs for calendar appointments in your BES logs. Maybe I misunderstood? I don't see anything in our logs for appointments other than a notification that a sync happened.