Not addressed: where did that rogue UPDATE come from? Takeaway:

1

Not addressed: where did that rogue UPDATE come from?

Takeaway: make nice with your hosting company – they might save your bacon at some point.

2

I read it that “the bug” referred to in this sentence was the cause of the rogue UPDATE: “I located the bug, which turned out to be a small line of code I forgot to check regarding The Great YouTube Debacle of 2013”.

3

It also looks like they had “a backup”.

4

Yes, a single copy which is overwritten each time isn’t quite the meaning of “backup” that’s needed.