I will do your link one better. This is an article written by Kingston George who was in charge of the BU telescope project. He says the story told by Jacobs is total bunk!
http://home.comcast.net/~tprinty/UFO/bigsur.htm
I have debated this with Robert Hastings and his research is less than accurate about the event. There are no records of any problems with the flights of Butterfly net or Buzzing Bee (the two candidate launches). Butterfly net is what Hastings and Jacobs state was the launch but the launch was after sunrise and the BU telescope did not have the capability to track the warhead in daylight (this was mentioned in progress reports). However, they did have the ability to track Buzzing Bee after MECO (main engine cutoff), which is what George states was the launch described by Jacobs. That launch was a sucess and there was no loss of warhead. In fact, records show that the warhead on Butterfly net made it to the impact area.
That means that Bob Jacobs is either a liar or he is mistaken about what was seen. I want to believe that he was mistaken but his memories have become tainted by UFO belief. He saw the event Kingston George described but he felt that parts of decoys were some sort of unusual event. BTW, he did not know what they were so they were "Unidentified Flying Objects" (UFOs) to him. For Kingston George, he knew exactly what they were so, to him, they were not UFOs.