1) Make sure you are not in a directory on the drive. "cd" will take you out.
2) Kill stubby and whatever else is running from the drive
3) /bin/umount -f /tmp/mnt/sda1
4) /usr/sbin/e2fsck -f -p /dev/sda1
5) /bin/mount /dev/sda1 /tmp/mnt/USB-Drive
Hopefully the filesystem was just mounted wrong.
Thanks, I am in the root folder, but how do I kill stubby or the other scripts?