He stole them? You mean they are gone now? Because the closest I can imagine happening is an unlicensed reproduction of your content, your credentials included. ... Like any archive service would do it.

I take it then, when you posted these 14 years of comments, you didn't want them available to the public to, I don't know, read?! Thank goodness IMDB deleted them all before we happened across them by accident & violated your privacy.