Thanks for that screenshot - that helps a lot!
I went back and looked at your past post revisions and this post revision timestamp seems to be the one that corresponds to your Facebook post:
31 May, 2013 @ 23:28:38
Since the post was originally published at May 31, 2013 @ 23:29, it seems Facebook was pulling the original postdata information when you shared the post, despite the fact you made 9 more revisions to that post since then. I tested sharing it today and confirmed it was using the original published version.
Because this is a Facebook issue, there's not a whole lot we can do on our end to prevent this in the future. However, I was able to update the information Facebook uses for that post by running that post URL (http://sentientmouse.com/2013/05/31/empty-hands/) through Facebook's debugger tool in order to force Facebook to pull the most recent version of your post:
After I ran your post through the debugger, it shows the most up-to-date version of your post in the "teaser" when I tested sharing your post.
If you see this in the future, running your post URL through the debugger will fix the problem.
I hope that helps! Let me know if you have any questions.