UFO in space reacts to unknown approaching object

Is this the most spectacular UFO footage ever captured in space? This video was captured by NASA's own cameras aboard Shuttle Mission STS-48 / Discovery from 1991. 


An object flies right to left before a bright flash is seen from what is presumably the firing of a weapon. The object immediately responds by changing direction and accelerating to an incredible speed. What looks like a missile or energy weapon streaks through the area where the UFO had been. 

NASA explained that it was a debris particle responding to a shuttle thruster firing but records obtained from NASA show that none of the space shuttle’s thrusters were firing during the moment of the flash and the object initial response to the light flash, besides, studies on this subject have learned that the object appears approximately one minute after the firing of the shuttle’s thrusters and one minute before the next thruster firing but given that the object was closer to the Earth’s horizon than to the space shuttle means the thrusters could not have provided the accelerating force necessary to deflect the object from its path. 


In addition, at the moment of the light flash some force began accelerating the object in response to the light flash but since there is no apparent external source of propulsion to account for the increase in speed, suggesting that it, too, may have been self-propelled which is another indication that the object may have been a UFO under intelligent control responding to a possible attack on its craft.