Of course it was fixed. It was the equivalent of throwing spaghetti against the wall, eventually something will stick.
If you run hand-picked, selected women at the program, eventually you will find someone who can pass in some fashion.
You may be missing the point. It seems whomever passed was passed DESPITE their lack of qualifications. IOW, the woman who was passed, had she been a he and performed identically, would NOT have passed.