Drobo 5N admin and root same home directory

The admin and root account have the same homedir of /mnt/DroboFS defined in /etc/passwd. The directory generally has ownership by the admin user which makes it so my /mnt/DroboFS/.ssh/authorized_keys file no longer allows root to login. I am thinking of just getting a cronjob that changes the ownership of /mnt/DroboFS to root - and perform this task every minute.

Are there other options? What have people done to get around this?