For some time now corporate security has requested a better way to recover data if an employee quit or was let go and they didn't know the users password.
They normally would have to go into recovery, follow additional steps so they can attempt to decrypt the device... then wait for the decrypt to finish. Then boot it up login and connect to the network or plug in a hard drive.
Now you can just connect the Mac over Target Disk Mode and use the FV2 Personal Recovery to unlock the disk in terminal!
https://mrmacintosh.com/filevault-2-target-disk-mode-unlock-using-the-personal-recovery-key/
