I dunno that this is all that big news because, as BTB’s “How to write a homophobic screed” points out: anti-gays love to cite innumerable sources because nobody’s actually going to check on them and ensure that they’re valid. I fully expect the other side to keep citing this study for decades.
It’s a tactic known as the Gish Gallop: innundate your audience with all sorts of ridiculous and wild claims – by the time your opposition has researched the BS you’re spewing and debunked it, you’ve gone on to make a dozen more equally insane claims.
Don’t get me wrong – this retraction is a good thing – I just don’t think it’ll mitigate the ridiculousness of the anti-gay side or, more importantly, reduce the damage they can do.