De-ecryptfs-ing -- can an authorized user do this easily?

I know that ecryptfs by its nature shouldn’t be easy for an unauthorized person to decrypt. But with Dropbox’s new rules, DB will no longer “play nice” with an EXT4 file system using ecryptfs; thus, I’d like to remove it, eventually using something like LUKS. (And, long term, moving away from DB altogether to something like NextCloud or SeaFile. Don’t want to do that yet, though, because I have 10 months remaining on our nonrefundable DB subscription.)

The short-term goal is to get syncing working with DB ASAP, and for this the ecryptfs encryption needs to be removed. If I can produce the result of ecryptfs-unwrap-passphrase, is there an easy way (or, if not easy, at least straightforward way) to do this?

Thanks in advance!

I’m not sure if it’s possible without re-installation.
Do you have drive space left where you can move the cleartext data to?
TBH, I don’t even know if I correctly understand your issue, usually individual programs don’t have an issue accessing data from encrypted file systems once they’ve been unlocked. Is the raw FS itself being backed up to dropbox?

Yes, I think the raw FS is being backed up, which makes it all the more strange.

I wonder, though, if either Facebook backed off their new stance or if the kernels folks or the Ubuntu team did something behind the scenes. All I know is that FB is now working again, despite the ecryptfs. Go figure!

I guess this thread could be marked “solved” – but I still feel like I’m waiting for the other proverbial shoe to drop.