My wife and I had a similar incident at a small FL airport (ECP) this past Monday. I had a small wine corkscrew with attached 6/8" fold out blade for removing the plastic cap confiscated. I have traveled with this item for years and never had a problem, but in this case, the agent said no and was backed up by his supervisor after I protested. You are allowed scissors with a blade under 4" or a knitting needle, but not a wine opener blade under 1". I was told that regardless of the TSA published list of allowed/prohibited items or the fact that other locations might have allowed an item, the final decision rests with the on-site TSA agent.