I read about a study not too long ago where participants would be asked to answer some simple math questions, then look at a screen with static for some period of time. For half the participants their answers on the math questions were immediately given feedback as being correct or incorrect at random, whereas the other half didn't have the questions graded. The group that had their questions graded randomly (i.e. they'd get the answers correct since they're simple questions, but they'd randomly be told that they were wrong) were much more likely to see patterns in the static.
The interpretation of this is that the more out of control your life feels, the more likely you are to see patterns in random data, and that's basically what most conspiracy theories are. It makes sense, then, that those who are leaving a cult will have a little more predisposition to being drawn to them.