He's been responding, and responding to counter-responses, and then responding to secondary-takedowns, then counter-responding to secondary takedown denials for quite a while. I think it's appropriate to bring this into the public view.
Yeah he definitely did the due diligence before bringing it public...
On a side note, he did post his video here with popups that are basically an "American Pie" like parody of popups in films... except that I think the popups are supposed to be serious. They make watching the remix utterly impossible though.
http://www.rebelliouspixels.com/popupvideo/