You can download these files through SFTP as "root". If you use Windows on your home computer, then an application such as FileZilla might be useful for SFTP activity.
Hello :D
You can also mount a FTP account from your own PC using Filezilla FTP Server to a directory on the servers (eg. /mnt/pcbackup).
And schedule a cronjob to copy all /backup contents to /mnt/pcbackup.
This can be easily be done with curlftpfs.