Hour and a half later...
Ran centrifydc stop on a different SSH session because I wanted to see if the system would spit out on the original session any messages once I stopped whatever was running. Usually breaking/stopping the hung prompt did not print anything.
Lo and behold. Original session did have something to say after all.
Error: Failed to start adclient within given wait time (in seconds) - 60 Could not communicate with adclient. Initializing cache Exception during cache load ipc socket connect: No such file or directory .join failed Error detected. Error detected. More information may be found in the logfile (location is /var/log/centrifydc-install.log). Exiting ...
The install log mentioned ended with an ERROR CODE: 26.
The following process was removed after the centrifydc stop was called.
root 1311156 1573424 0 11:54:15 pts/0 0:00 /usr/share/centrifydc/libexec/adjoin -p * -n psa -c OU=Servers,DC=PG,DC=local -w pg.local