root account locked because of stupid move

[prale]

Hello I accidently dissabled my root login.

# vi /etc/ssh/sshd_config
Port 222
PermitRootLogin no

And I don't have another user than root :S

The only thing what I can do is boot in resque mode, then user root gets a random password and ssh port is at 22 again.

The problem is that I can't save changes to sshd_conf any more, because after a reboot is seems like the file before I moved into recovery mode is back again (port 222 for ssh).

Also the command adduser works, but I can't login with it.
I'm reconsidering a complete reinstall of debian an ispcp, but hopefully someone knows the trick to fix it.