Jason Alexander Apologizes to 'Seinfeld' Co-Star After Critical Comments

LOS ANGELES - A day after his critical comments about his co-star on "Seinfeld," Heidi Swedberg on "The Howard Stern Show," Jason Alexander apologized to her via Twitter.

Alexander, who played George Costanza on the hit 90s sitcom, told the shockjock and his radio audience, that Swedberg was "F@#$ing impossible to work with." He added that he “couldn’t figure out how to play off of her" during scenes.

Swedberg played the role of Susan Ross, Costanza's fiancee who was killed off in show's seventh season when she licked envelopes for their wedding invitations with toxic adhesive .

"Her instincts for doing a scene, where the comedy was, and mine were always misfiring,” he continued. “And she would do something, and I would go, ‘OK, I see what she’s going to do — I’m going to adjust to her.’ And then I’d adjust, and then it would change.”

But today, Alexander apologized to Swedberg, tweeting: "Ok folks, I feel officially awful. Yesterday on @Sternshow, I retold a story I had told years ago about my personal difficulties and insecurities in playing George against the Susan that Heidi Swedberg created. The impetus for telling this story was that Howard said, 'Julia Louis Dreyfuss told me you all wanted to kill her' So I told the story to try and clarify that no one wanted to kill Heidi."

To read the full posting, click here.

Alexander appeared on Howard Stern show just prior to his debut in the Broadway comedy “Fish in the Dark,” where he replaces Larry David, the co-creator of “Seinfeld.”