Goodnight!
I went through the same problem and after a whole day of analysis and research, I came to the conclusion that there is no solution for this problem. It's frustrating to realize that a solution that has so much potential runs into situations like this, with no solution.
I hope there is some light, even though I have daily backup of my applications, I will still have a big loss of data worked on throughout the day. Not to mention the time for restoration.
After this incident I need to rethink whether it is worth working with Ceph integrated with Proxmox.
If anyone has any light I would be forever grateful.