The rights holder, or the MPAA or whoever sent the DMCA takedown notice wins one.
This will happen if there are more files posted than recovery blocks posted and you use Giganews only.
If there are more recovery blocks than files, it should be repairable.
If you're stubborn and ready to do some tedious work, it's possible to download only the missing articles from another server, decode them and combine the files with a file joiner. You would need some other newsreader than alt.binz to get the missing articles.
Configuring a fill server (cheap block account server or free server) avoids the whole problem.