Lost 3 days worth of posts

This afternoon, we somehow lost the past 3 days worth of posts on our site (www.dailygrindhouse.com) — there is no evidence that they were there, it just seems to have suddenly backdated to three days ago. You can see the cached version of one of the posts here: https://webcache.googleusercontent.com/search?q=cache:vsgHJqP5MAMJ:dailygrindhouse.com/interviews/skipping-class-ditch-day-massacre-director-daniel-coughlin/+&cd=1&hl=en&ct=clnk&gl=us&client=firefox-a

Any idea how to get the lost posts back? It seemed to have corrected briefly later this afternoon, but has now returned to missing the content.