I thought I found a mistake on the Tonido Plug Installation instructions....but it was correct.
$this->bbcode_second_pass_code('', 'cd /
/etc/init.d/samba stop
umount /media/*
mkfs.ext2 /dev/sda1
mkdir /arch
mount /dev/sda1 /arch
cd /arch
wget http://archlinuxarm.org/os/ArchLinuxARM-armv5te-latest.tar.gz
tar -xzvf ArchLinuxARM-armv5te-*.tar.gz
rm ArchLinuxARM-armv5te-*.tar.gz
cd /
umount /arch
reboot')
Unfortunately, the Tonido plug hangs on reboot.