part of the prayer you are doing should be for protection from these things weather you are in your body or not. a good prayer for this is... angelic forces, please watch over me and if any negative earthbound spirits or disincarnate entities attempt to approach me take them to where they are supposed to be. as far as my reasearch into the experts on this subject, you wont get stuck outside your body unless your body is damaged and you are in the process of dyeing.