It makes perfect sense if Trayvon also took the pink route... not saying that's what happened, but it would account for the altercation happening at "F" as Z was returning to his truck. Z's actual statements (as opposed to the hearsay interviews given by his family) should all come out in the trial, if things get that far.
If Treyvon took that route too, then any notion of fear has to be dismissed. It would seem had he gone through there, he’d have turned right to go towards “home”, not turn left to circle back towards the ‘weird guy’ watching him. Also he was relatively new to the area. Zimmerman would be more likely to know he could cut through there and maybe get a fix on Martin again.
Alternatively, if George had done as he says and followed the maps direct route from C to E, then Treyvon jumping him on his way back to C, there’d be a lot of backpedaling and dancing away from Martin to get to F.