"Ensuing" in this context means after the the failed acquisition and bankruptcy (2001). "Continues" means it's still ongoing. And keep in mind the context of this article is 2012.
There is no redundancy.
As was pointed out in another comment[1], Goldman Sachs won the ensuing court case.
Which begs the question: Does the legal battle in fact, continue, or is the matter settled (in which case the parent's author is talking crap)?
Which is why I asked "Really?"
1: https://news.ycombinator.com/item?id=10994872
"Ensuing" in this context means after the the failed acquisition and bankruptcy (2001). "Continues" means it's still ongoing. And keep in mind the context of this article is 2012.
There is no redundancy.