Santa Barbara Fire Department officials are now saying that the cracked windshield of Oprah Winfrey's private jet, which caused the talk queen and beau Stedman Graham's Monday trip to Chicago to be snuffed, was not the result of a collision with a bird, but was due to "fatigue" caused by wear and tear.... Meanwhile, lawyers for Oprah's pal David Letterman have succeeded in having a judge toss the restraining order granted to a Sante Fe woman who claimed the Late Show host has been sending coded messages to her since 1994. Colleen Nestler now frets that Letterman has unfettered access to her, noting that "he has many accomplices. I know this sounds crazy." And I'll leave it at that.