Do you mean if the site penalized in google SE? what if all your keywords went down from rank1 or page 1 to page 7 or not in top 100/200 but if you put the URL of your site in google SE and still your site index by google.
my wesite also met the same problem. maybe it is influence by penguin 2.1, who knows? just wait and see!!
That is because of penguine 2.1 update all the spammed links are deleted and hence you will lose all those backlinks from your site.