In another case, the Massachusetts Bay Transportation Authority was granted an injunction two years ago to prevent a group of college students from detailing vulnerabilities in the transportation authority's automated fare system.
Keep in mind that Sony's getting this information to show that many of the downloaders and commenters are from Northern California and that Hotz's hacking efforts were aimed at Californians -- meaning the case should remain in the Bay Area instead of moving to New Jersey where Geohot hacked his PS3.
If these men had attempted to bring their cases without already having seen the documents, the case would be similar to the Guantanamo Bay legal action.