I made this promise in the understanding that it was a special that was never released in any form. If that proves to be untrue or when a lower quality version of this program is already out there I see no reason to hold out on this one.

This has aired before. I have seen it. I had it on tape when I was a kid. I started a thread a looooong time ago asking if anyone else knew of it, but it is long gone. I had convinced myself that I was thinking SPFX, however, I remembered footage that is NOT in SPFX and now after seeing those screen shots, I know I have seen it. I'm not crazy after all! This must be shared!
OK Darth Mallwalker has helped me out... the thread can be see here

Hi 20th Century Mark, it appears you are right

I remember a specific scene showing how they filmed the first AT-AT being taken down using a four foot model. I don't remember seeing that in SPFX.

I have checked the program and there is a section about the fall of the first AT-AT.

Is this proof enough?

I still have heard nothing from thewizard_7 about it.