Attempted to decrypt external HD partway through encryption and now stuck

[mistermacs]

I originally started to encrypt an external drive via right clicking the image and hitting "encrypt". It got to about 4% progress when I decided to reverse the process. Running OSX Sierra.

I ran a terminal command and have left it for about 12 hours, and it is still stuck on "pending"

+-> Logical Volume Family

----------------------------------------------------------

Encryption Type: AES-XTS

Encryption Status: Unlocked

Conversion Status: Converting

Reversion State: Pending

High Level Queries: Not Fully Secure

| Has Visible Users

| Has Volume Key

|

+-> Logical Volume

---------------------------------------------------

Disk: disk5

Status: Online

Size (Total): 999489667072 B (999.5 GB)

Conversion Progress: Paused

Revertible: Yes (unlock and decryption required)

LV Name: volume name

Volume Name: volume name

Content Hint: Apple_HFS
MacBook-Pro:~ $ diskutil cs list | grep -e "Conversion" -e /Volumes/ volume name

Conversion Status: Converting

Conversion Progress: Paused
The problem is I can't wipe the disk, as there is no back up of the data (long story). Is there any way to force the decrypt to continue? If not, should I just go back to finishing the encryption? Or is 12 hours or more to be expected in this process and I should be patient?

Or will the drive still be usable if I simply eject?

Thanks in advance.