It looks like this happened yesterday, and he says in the link that it normally takes 2 days to investigate and respond.
This is an unfortunate incident, but IMO hardly as egregious as other commenters are making it out to be. A false positive for literal videos of terrorist vehicles does not seem at all unreasonable, and yet HN has given it less than 24 hours to be resolved before blasting it to the top of the front page.
