You witnessed an individual located in one of the higher dimensions / frequencies whos image was 'bleeding through' to our dimension. Since our dimension's frequency is increasing daily as we approach 2012, the veil between dimensions (ours and the higher ones) is growing thinner. Expect more and more effects like this. Actually, nothing to fear here.
In reality, 2012 represents our ascension to these higher dimensions, at least for those of us who so choose (a very wonderful and desireable option). Others who choose NOT to ascend will have to reincarnate into other 3-D worlds and will miss this boat.
RECOMMENDED READING:
Adventures Beyond the Body by William Buhlman. Relates the experiences of one who can easily slip out of body during sleep and can access the higher dimensions.
Soul Traveler: A Guide to Out-Of-Body Experiences and the Wonders Beyond.
If you need more detailed info, especially science-based, get all the David Wilcock books free from
www.thesonsofthelawofone.com in the .PDF section. They will knock your socks off.