will what work? Decrypting a drive? Yes, you can always use SafeTech to decrypt a disk as long as you know what was encrypted, and you have the DB entry for it.
Depending what RAID configuration that server disk was on.
But yes, even SafeBoot 4.2 has offline disk decryption tools and procedures. SafeTech comes to mind.
Perform dry run tests reading single disk sectors, loading them to workspace and decrypting workspace. Obviously after you exported machine info to SDB file and loeded it in SafeTech.