Apologies. I did say 'assuming it was you', so I was well aware it might not be.
I don't buy the 'computer error' explanation. The edit looks too surgical for that, & would have required a considerable amount of AI. I know they're getting cleverer by the day, but I doubt we've reached Terminator territory quite yet.
If the OP comes back, I might try posting the link again, but since I gave the name of the site above, he should be able to find it for himself.