Yeah, it looks like a hinge pin broke on the cleat clamp/holder. I have the same pedals and so far no problems but I can say that that ain't right. As long as the other side holds your ok, but when it goes it will just flop apart. You can take the upper chrome plate off the pedal and have a look in there to see specifically whats broken, If memory serves its held on by some phillips head screws (I rarely look at my pedals and its been 9 months since I had them apart for some silicone spray at those pivot points).

then again, new one's, 40 with a 20% discount....