Maybe she did make a mistake by inviting Ponante, but that does not justify the scene that Lickwood made. People in every walk of life have to work with people they don't like. Most can handle it like mature, responsible adult.

Kurt don't like Gram, Gram don't like Kurt.

That's cool. Kurt should have did his job, spit out a few lines read off a cue card, inserted dick into chick's three orifices, and should have just ignored Mr. Ponante's presence there(or, if talked to kept a civil tongue with Gram). In turn, Gram should have observed the shoot, take some notes and pictures, and wrote up of somewhat humorous piece about a day on the set of a porn shoot.

Kurt, professionalism. Look it up. Like I said earlier, many of us in the real world have to deal with people we don't like on the job. Most of us don't respond by tearing our shirts off and shoving people around.