In effect, it's the Duke Lacrosse case all over again.
The key here is money. If UVA can afford it, they can wage a very expensive lawsuit that will financially cripple RS and the author.
An additional benefit would be the emails, postings, tweets, etc that discovery would bring to light. That would probably discredit RS, it’s editorial management and the author.
It wouldn’t matter whether the suit was wine or not. An example would be made and a message sent that there are repercussions for this sort of thing.