That is a possibility. But rational thinking would suggest that that is a foolish move. He had to know that Ordel would kill his ass over this! He killed , unkown (chris tucker), for simply knowing shit!!! but i do think he killed her because he got carried away and was going pyscho being afraid of Ordel. In the end, he was scared for his life and reacted in a bad way, i think that Ordel killed him because he thought melanie was still alive and would come back seeking revenge, and if luis isn’t alive, thats one less person to deal with.
