Hello Rick,
It is not recommended to break the cluster. As I understand you are using the same credentials to login on the Secondary server as of Primary Server.
You can try adding a new administrator on the Secondary Server using SSH with the help of command below
psql oviddb -U ovidrw -c "INSERT INTO omc_administrator (uuid, name, roleid, passwordmd5, created, recvdailyemail, introduced) VALUES ('666666', 'admin', 'ROLE_SUPERUSER','`slappasswd -s PASSWORD`',now(),false,true);"
The username would be admin and password would be PASSWORD.
Disclaimer: Use the command in the test environment first .