If the memetic hazard you're referring to is the same one as mine, I recommend benzodiazepines in the short term and vipassana meditation in the long term. And just thinking about it, though clearly you're already doing that.

I think to a large extent, the percieved threat of the thing is due to a generally neurotic perspective, common to many people here, which can twist abstract thinking into knots when given a sufficiently long and nonintuitive chain of reasoning. The trauma illuminates a serious problem with the mind rather than a serious threat from the idea.