That phonecall kinda gave me the shivers @_@ What deck(s) do you normally use?
My 'Cosmic Tarot' says: "The unconscious, hidden mental power, to forget oneself, salvation, mercy, great love, darkness, secret, drunkenness, hysteria." The definitions in the little booklet do not distinguish between negative and positive meanings, so I usually have a tricky time interpreting the cards until the whole spread is revealed.
The Moon in the 'Tarot of the Samurai' says: "Space: What we cannot know exists anyway. Where there is wisdom, there is space." This deck has relatively nontraditional readings, so I don't know how well it applies here.
The definition for the Moon card in the 'Tarot of the Witches' is: "Caution. Danger. Scandal. Error. Disillusionment. Deception. Trickery. Bad influences. Ulterior motives. Insincerity. Selfishness. Superficiality. Unknown enemies." These seem to be only negative connotations, as opposed to the aforementioned 'Cosmic Tarot'. :S
I just thought I'd give you a few more interpretations of the card. I used the 'Tarot of the Witches' for quite a while, and it is where I learned Tarot, so I always have these meanings in the back of my head when it crops up in another deck. Is the presence of the Moon scaring you? Do you think it is some omen, or just a freaky coincidence?