To answer the OP's original question, yes, you can report this man for his line of OoRP, however, besides his dialogue, he really didn't do anything wrong. A trader can always roleplay a crazy guy who opens fire on anything that seems minutely hostile to him. Does it have repercussions? Yes, yes it does. Is it the best thing to do to keep your job? Not quite...
However, it looks like this guy needs a stern talking to as well, as it doesn't seem like he is RPing anything...
[8:32:45 PM] Dusty Lens: Oh no, let me get that. Hello? Oh it's my grandma. She says to be roleplay.
[12:49:19 AM] Elgatodiablo: You know its nice that you have all that proof and all, Bacon... but I just don't believe you.