I think that episode is about an actual experience from Larry David's life.
I think the story goes back to when Larry David was so upset working on Saturday Night Live that he stormed into the office of his boss, I guess it would have been Dick Ebersol, and quit on a Friday and then on Monday he showed up at work like nothing happened after, on thw weekend, a friend discussed with him how much money he was losing.
Whether that Rick guy is supposed to be Dick Ebersol I'd really like to know.