JW411, you mentioned that you may have a good idea of what potentially happened. Why don't you voice it? I think people should still be allowed to present their opinions and speculations (even in this forum) so long as they are labeled as such. Not only is it essentially the right of free speech but it might also raise points that nobody considered before.
Out of interest, what sort of 'serious trouble' could somebody get into for voicing an opinion that is later proved to be factually wrong or based on fallacious assumptions? (And the facts are still to come...)
Lastly, on the RVR - very interesting technical discussion - but what about 'good airmanship'? Is it ill-advised to do reconsider the decision to land/approach having a ****ty METAR or cloud base?