'Teen Mom' star Catelynn Lowell reportedly furious with Farrah Abraham

In the recently released trailer for the new season of "Teen Mom OG," Farrah Abraham is seen arguing with the series' co-executive producer, Larry Musnik, as she tells him that she doesn't want to be on the show anymore since she makes more money doing other things.

"I don't need to be part of a trashy [expletive] show anymore because I make millions of dollars doing other [expletive]," Farrah rants at Musnik.

While fans of the show thought that this was just a simple argument between the star and the producer, a source from Radar Online said that the fight escalated from there and that Farrah became physically violent.

"She punched and shoved the producer," said the insider.

As a result, co-star Catelynn Lowell is said to be furious with the 24-year old. Another source told Radar Online that Catelynn, Maci Bookout and Amber Portwood watched the entire footage of Farrah attacking Musnik at an after show taping in New York, and the sight allegedly made Catelynn lose her temper as she called Farrah "every name in the book with cameras rolling."

"Getting violent with a crew member whom they've all known for years is completely out of line, and Catelynn said she wouldn't stand for it," said the source.

Radar reports that the fight began when Farrah planned to appear on another network's reality show to work on her relationship with her mother. When producers did not allow her to be on the show because it conflicted with her contract with the network, the mother of one was said to be very angry about this.

The second source said that Catelynn went on to reveal Farrah's diva behavior on the set of their reality show.

"She said Farrah doesn't even allow the crew to use her bathroom," said the source, adding that the star makes the crew bring porta potties to her property.

"Teen Mom OG" returns on Jan. 4 at 10 p.m. on MTV.