Oh yes I do see what you are talking about Jfloydian! It is very light and I can't draw a conclusion but I do see what looks to be the arm you mentioned and it does resemble a human form.
How did you capture a still photo from the video? There is something in that still that I am dying to circle and have you take a look at but with my software I can't seem to get a still from the vid. Do you have special software for that?
Sorry to be a buzzkill, but I'm pretty sure its probably just a real person standing there, but you never know! Its just too bad we don't know more about the person who took the photo. Ghost1, do you know if the youtube user who uploaded the video also took the pictures? If so, maybe you can contact him and point out the supposed apparition and ask him/her about it.