>I'm willing to bet the original crashed and burned and that this is a mockup.

this is after falling from 20km height after being hit by a surface-to-air missile. Would be enough to produce a very closely resembling mockup :

http://www.aerospaceweb.org/question/history/u2/u2-wreckage....

>Iran doesn't have the resources to land one of these intact, themselves.

Pretty much the same believe was held about Soviet Union surface-to-air capabilities before the U2 incident (and the belief was true right to exactly the point of the accident as it did took 14 missiles to score the hit)