The thrust of the disinformation could go something along the lines of: This could not have been a Rapture because of A, B and C, and then the devil would simply have to fill in the blanks. What follows is one potential scenario. The first part “A” would have to be a straw man argument, that is, some kind of easy softball that immediately wins the rational mind into agreement. The second part “B” will have to be a genuine appeal to the core values of a liberal. The third part “C” will have to be a bald-faced lie that is designed to get the deceived to emotionally root against any Rapture explanation.
So the disinformation could go something along the lines of: We know that this could not have been “The Rapture” because, A) [here comes a strawman argument] there were no cataclysmic catastrophes involving rolling earthquakes around the globe, starting with New Zealand. (Chuckle chuckle.) So we can safely rule out any wild Rapture theories. [People like Harold Camping have helped to make such strawman arguments very easy to construct.] Secondly, we know that this could not have been a Rapture because, B) [and here comes the emotional appeal] good people of all faiths are still here, and God would not leave behind indisputably good people who, in some cases, have spent an entire lifetime devoting themselves to the noble causes of social justice, in order to make this world a better place for all of humanity. Thirdly, we know that this could not have been a Rapture because, C) [here comes the bald-faced lie to get people to root against a Rapture explanation] if a Rapture did take place, it would mean that we are all damned, and are we going to give in to fear and doubt, or are we going get back on our feet, and rise to meet these new challenges? I can tell you that we will not give in to wild conspiracy theories, but instead, deal with the realities that face us, which in the end, will only serve to make us a better and strong society because of it.