Your Open Graph meta tags are indeed set up properly. They're managed by SEO Ultimate, so Jetpack doesn't have any control over the look of your posts on Facebook. It's all between SEO Ultimate and Facebook now.
SEO Ultimate does its job properly though: the meta tag is there, and it's up to Facebook to use it or to ignore it.
I did note one thing, though. I received multiple database errors when I tried to access your site and your images:
http://i.wpne.ws/TFiv
Facebook might be running into the same errors. Looking at the Debug results, you can see that Facebook finds the image tag, but the image itself is not displayed. That would explain why Facebook cannot display it.
I would recommend that you check your database status and see if this helps.