02/03/2012 07:38 am ET | Updated Feb 03, 2012

'Grey's Anatomy' Alternate Reality Episode Takes Shot At Katherine Heigl's Character (VIDEO)

Former "Grey's Anatomy" (Thu., 9 p.m. EST on ABC) star Katherine Heigl has been hitting the talk-show circuit recently and has made no secret of her desire to return to the series. However, sources told EW that after her rancorous departure in 2010, she may never be welcomed back.

So, did Heigl's character Izzie make an appearance on last night's alternate reality episode, "If/Then?"

Kind of. It was all a dream as Meredith nodded off and experienced a different kind of life. One in which she was engaged to Alex.

Sitting in the hospital cafeteria she and the other doctors were gossiping about their "loner" co-worker Cristina and the fallout from her affair with Dr. Burke. Meredith had heard that Cristina was such a bunny-boiler that a scared Dr. Burke even had to leave the state.

And that's when Izzie came up. "I always say never mess with the crazy chicks," laughed Alex. "She's probably going to go full-on Izzie one day and shoot up the hospital!"

When Jackson asked who Izzie was, the claws really came out.

Appparently the alternate Izzie was nuts. Not only was she sleeping with her patient, but she went and stole a heart from the transplant list for him. Luckily Meredith caught her and had her fired.

The drama continues on "Grey's Anatomy" Thursday nights at 9 p.m. EST on ABC.

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