I suppose they can possibly use the legal system to stop the crack being published but I dont think they can stop people getting the program AnyDvd.
This program runs in the background of your pc and will automatically scan CDs and DVDs, (including BluRay and HD in the latest versions), and strips all copy protection and regional information off the CD/DVD.
This allows them to be either played, copied, edited, shrunk, converted and burned to CD/DVD without any problems or restrictions that DRM and HDCP can impose.
As the program has legitimate uses, a little like Bit Torrents, then they can huff and puff as much as they like as its a perfectly legal program to buy and use, even if some "naughty" people may use it to circumvent DRM and HDCP