There was an option to recover the PAM node using the database backup of one the PAM instance in 2.8.x version.
However in 3.x version, it seems like it is required to be connected to one of the cluster node to be synced so that the other one get active thus failing the DR concept here. The architecture I am referring to have clusters based on the region and have DR instance as backup if by any chance the regional PAM cluster failed or met any disaster.
With new 3.x, we see that the DR scenario cannot be activated since it requires the cluster to be connected.
Please take it into consideration and create an option/technique to have the standalone DR recovery option possible without connecting to cluster node.