Spike in Traffic... All Rankings Dropped!

Hello!

Over the course of 3 hours, I had some odd 100,000% increase in traffic from 3-5 visits per day to 2,500 in a few hours, all from a small town in Virginia, USA. Google then dropped what little rankings the site had. I was just getting started on the site, writing great content. It's a church site.

I didn't buy traffic or do anything to it. Had some foundation links built a month or so ago, but that's it. Any ideas what's going on?

bbchurchgalesburg.com

Any help would be appreciated, thanks!

Greg