[Justa]

I'm sorry but I believe you are wrong. If you watch the video you can clearly see that regardless of the clarity or depiction of the main object that the smaller object which tumbling away to the lower is the shuttle's tail. In one frame, about 2/5s thru the sequence, even the black marking lines of the rudder are visible! It appears as if the tail broke off 1/3 the way up with the broken piece taking the full length of rudder with it.

If you look for it you will see it. I do not believe I am mistaken on this.

[wasp69]

Here is NASA saying the tail rudder fell away. I wonder what video they were watching? Do you think maybe it's the one that was not going to be used for anything by NASA?