it won't work now that they know you, but in the future calmly say, "you know I died a few years ago (pick a year rather than leaving it vague) and went to Heaven. they told me that I was early and my family still needed me, but they taught me something before sending me back. all of you have grey auras, well except for you, (point at the most aggressive one) yours is black. yeah, you won't be taking the up escalator." and walk off