There are plenty of sane reasons, DDOS included (which seems like what happened here), since our digital world is built on physical systems that have limitations and suffer from external influences that can't be contained.
This is exactly why services like CloudFlare exist. You can get pretty much the same behavior using CloudFront too. You may get a bit of downtime, but nothing like the hour+ that is going on now. You can even chain them together... CloudFlare in front of your CloudFront. CloudFlare screws up, just turn it off, now everything goes to CloudFront.