How do i restore my wordpress after failed conversion to multisite?

My website url is http://dcruz.us

Hi I tried changing my normal turnkey linux wordpress site to wordpress multisite, but now I am not able to login or access the website.
I followed all the instructions given on http://www.turnkeylinux.org/docs/wordpress/multisite
Before this I did this the site was working fine.

Is it possible for you to help me identify what what wrong and what is the solution? Many thanks.