Yes, it was definately a great way to test our missle system. As for burning up on re-entery, space rocks not much larger than a marble can become meteorites. Heck, when the shuttle blew up on re-entry a few years ago peices much larger than this spy satellite were found across Texas. The high-quality glass used in the optics systems have a very high melting point, they probably wouldn't even notice the heat of re-entry.

-Blast