Which is why I wonder if he wasn't a schizophrenic, Bruce. An alkie wouldn't have had the agility to leap in and out of there through traffic like this guy did. Schizophrenics will often devise very elaborate living situations for themselves. The one I knew used to wander the alleys and go dumpster diving for stereo equipment. His entire two rooms that he lived in was a maze of electronic devices, cleverly cobbled together. The Dad may not have been able to handle the son's schizophrenic outburts, so that's why his son wasn't with him. I'm just guessing, here. There could be many other reasons for the man's story.