Of course this is not a first. And of course there is are some good solutions, one I like best is called "Pretty Good BGP" read more about it [PDF alert], if you like.
Was it a typo on a filter over at AS17557? Most likely we will never know, since those people in Pakistan are not really the kind of open minded guys, hence the hijack of YouTube's IP's in the first place.
Maybe this will lead to a global split of the I-network as we know it.