You're trusting a grainy video posted on YouTube by someone who admits to being an "artist" in their own profile and has no overt connection to NASA to legitimize this video to back your argument? That's not exactly stellar (you'll pardon the expression) evidence in your favor, voggmo
There are holes big enough to drive a Mack truck through in this one.
Personally, if it is video from the shuttle, of which I'm not convinced, it looks like a small meteorite that was deflected by a layer of atmosphere more than anything else.
And I say that as someone who thinks it's statistically impossible for us to be alone in the universe. This one just doesn't work as evidence for me.