One day after explaining one of biggest mysteries of "Seinfeld," Jason Alexander is apologizing. How George of him.

On Wednesday, Alexander confirmed on "The Howard Stern Show" on Wednesday that although the actress, Heidi Swedberg, is a "terrific girl," he "just couldn't figure out how to play off her." But on Thursday, Alexander posted an apology to the actress, Heidi Swedberg, writing that "now with distance, I can look at those episodes and see that there was a fun relationship there between George and Susan."

"People clearly liked the interplay [between George and Susan] even though I thought it was off," Alexander wrote. Alexander wrote that he is "so mad" at himself for "retelling this story in any way that would diminish" Swedberg.

During the Howard Stern show, Alexander said Swedberg's instincts when doing a scene where doing the comedy was and mine were always misfiring."

Alexander said that when David told him George would be engaged to Susan, he asked "who's playing George?"

Alexander said he frequently complaining about how hard it was to play off Swedberg, but the rest of the regulars on the show didn't take him seriously until Jerry Seinfeld and Julia Louis-Dreyfus had trouble working with her. According to Alexander, Louis-Dreyfus said after working with Swedberg "don't you want to just kill her?" and David said "ka-bang!" And thus the poison-glue plotline was born.

Alexander is set to take over for David in his play, "Fish In the Dark," on June 9. But Swedberg might have ended up even better: She is currently the lead in a ukelele band in California.