To clarify why Ray is so mad, Ray is a very proud person who grew up accustomed to getting what he wanted and being the best at what he does (music and dueling). He prides himself in his dueling talents and isn't used to coming across people better than he, or dealing with defeat. In his mind, he was dueling the lieutenant, and was forced to cheat to live. He's well aware that there are no rules in a life or death pirate battle, but because the lieutenant singled him out, he wanted to beat him 'fair and square,' but since he couldn't, his pride was bruised and so he's throwing an adult tantrum. In short, he's being a sore winner.

He also really liked his sword.