A Lesson Learned
Well, Mr. Smartypants has learned a lesson since this time yesterday: Don't go into battle and forget to bring your sword with you.
I've spent a couple of hours now researching where else I might have seen the image besides The Flypaper Theory, and looking for some archived or cached version of either the post or the page. No luck at all.
Like I said in comments, I have a specific memory of the image. One that doesn't match the only other version I might have seen. I've gone through my browser history as well, looking for another site that might have had it. Nothing.
Three of the five bloggers at The Flypaper Theory have denied here making or deleting or even seeing that post. I'm told a fourth has also denied it privately. The fifth is incommunicado at the moment. Regular readers there don't recall seeing it; no one's as yet stepped forward here to corroborate me.
So, I've made a charge with no proof of it, then been called out. The lesson? Take screenshots! Apparently, lots of 'em of anything that might possibly be controversial later. Or make sure you've found and screen-grabbed a cached version first. Don't make an accusation without proof.
So, since I can't prove my memory and the folks at The Flypaper Theory all deny it, I retract the accusation of posting and then deleting the Lieberman black-faced photoshop. It appears to be a product of my faulty memory. I apologise for the trouble I've stirred up as a result. I apologise if anyone feels their reputations have been besmirched.