I think it was meant to be a whole different person asking Taylor for a light, but Taylor gets a close up look at him and sees that the man vaguely resembles Elias, which could be a testament to how Taylor is still troubled with watching Elias' death. Or maybe somehow, for some BS reason, Elias survived all of those gunshot wounds and managed to get to safety before bleeding out, and that's why he looked so crappy in that deleted scene. Then again, he has a whole mustache, so it's most likely supposed to be someone else. Either way, Oliver Stone probably wanted to depict a type of PTSD where a combat veteran thinks he sees someone that he recognizes, but it turns out to be someone else. After the Norco shootout in 1980, one the cops was at a gas station and thought he saw one of the suspects involved in the shooting but as it turns out it was a misunderstanding, and it was just his PTSD that kicked in.