So... yeah. First off, sorry about that. But over the past few days, the traffic to your site shot through the roof starting about 6 days ago. Unfortunately I was out of town for the last 5 and didn't get to look into it until last night, and was planning to take a longer look at it after work today. Long story short, I think your wordpress install was under heavy attack. There were hundreds of gigabytes of traffic going to a few dozen eastern european and russian IPs, and all of those were continually sending dozens of comments and login attempts every minute. Over a full terabyte of traffic already went to your site before I locked it down. I hope by turning it off for a day or so, it'll kick it out of the botnet's list of targets and maybe the problem will be resolved.
I'm emailing you for further discussion.