Yes, especially if those other web sites have higher trust / authority in google.
To be honest, I am surprised that you ranked SO WELL in google for 6 months, because you are using non-original content and your links are from social bookmarking sites, which I believe you created yourself.
Please understand that I am NOT trying to blame you or insult you.
But if I understand correctly, your site is NOT using unique content (even though the tool is called unique content wizard) and your back links are NOT from authority websites (like from major newspapers, or university web sites, or from experts).
Anyway, maybe I am wrong. I hope I have helped though.