I think he got the point "E" from an interview given by Zimmerman's father, in which he recounted that Zimmerman had continued in the same direction on the path through to the other street before turning around. Not that "E" was the point where he lost sight of Martin.
I agree with you about Martin's likely route. It is tough to square that route and running home with the rest of the timeline. The fight began no more than 2 1/2 minutes after Zimmerman hung up the phone in nearly the exact spot where Martin would last have been seen.
My own map and timeline is here. I welcome corrections.
All interesting conjecture/observations.
Perhaps when Z made the statement (in his truck), TM was still seen running down the walkway heading towards the rear entrance. And then Z either “lost him” when TM turned, or perhaps faded away into the dark.
And Z may have assumed that TM did not live in the neighborhood (not seeing him around as TM was new), and figured he would just try to leave the complex as quick as possible - through that rear entrance.
From some of the witnesses it sounds like there was a verbal argument ahead of time. One person said something like “I heard voices, and could tell it wasn’t the normal conversation of people walking their dogs.”
So I’m not sure TM “Jumped” Zimmerman from behind - but probably started off with words that got out of control. (Although perhaps caught him off guard hiding behind a bush or something).
“Hey - what are you doing here?”
“Nothing man, I’m walking home”?
“Then how come you ran?”
“What are you - Mr. Cop or something?”
“Hey, listen punk - I’m the neighborhood watch Captain...”
“Oh - big shot watch captain, well how about you watch me kick your ass...”
Obviously all conjecture, but I could see each of their testosterone levels rising. Although from the phone call, Z doesn’t seem all that confident or cocky. Based on TM’s photos and posts, I can see where he might think it cool to go “gansta” on some guy.