And let the fallout begin. Grey’s Anatomy insiders have branded actress Katherine Heigl “ungrateful” after the Knocked Up star withdrew her name from Emmy contention, citing a lack of credible storyline for her Dr. Isobel Stevens during last season of the ABC medical drama.

“I did not feel that I was given the material this season to warrant an Emmy nomination and in an effort to maintain the integrity of the academy organization, I withdrew my name from contention,” Katherine said Wednesday. “In addition, I did not want to potentially take away an opportunity from an actress who was given such materials.”

At least one Grey’s mole has lashed out at the raising big-screen star:

“The show bent over backwards to accommodate her film schedule, and then she criticizes the show for lack of material?” a source told Entertainment Weekly. “It’s an ungrateful slap in the face to the very writers responsible for her Emmy win in the first place.”

Katherine won the Best Supporting Actress in a Drama Series Award at the 2007 Emmys.