Hands shaking, a battle between emotion and logic plays out inside Lex's head. 'Got him good with that shot, now time ta finish the sucker off! Dangit though! If I drop him and the other two run, then the cops will have ballistic evidence to tie to his gun. Shiza! They'll have that anyway from the bullets in the walls! Screw it, I gotta get outta here.'
Backing up slowly, he keeps his gun trained on the three as they make their escape, ready to shoot if they do otherwise. After that, he looks to the front of the place to see if the sirens are here yet. 'Gotta be close now, gotta get outta here!' he thinks again to himself. Looking over at the two strangers who helped him out, he wonders if this is all a massive set up still. But he doesn't have a car here and the guy who got tasered said...no, THOUGHT at him... that he had a car. "Well dude, can you walk to get us to your car or do I run on my own again?"