There is more to the story than the letter indicates on the website.
Bishop Williamson then told me that he never saw any evidence of Urrutigoity's homosexuality while Urrutigoity was a seminarian, priest, or professor at Winona. Bishop Williamson said that Fr. Urrutigoity was eventually expelled from the seminary in Winona not for homosexuality, but for subversive activities, namely, the secret planning of the Society of St. John in concert with others ... Bishop Williamson also told me that he had accompanied this young seminarian when he gave testimony against Fr. Urrutigoity at a Diocese of Scranton inquiry in July 1999. The inquiry was held at the request of Bishop James Timlin of Scranton who sent his auxiliary bishop, John Dougherty, along with another diocesan priest and an attorney, to hear this young seminarian's testimony. Bishop Bernard Fellay of the SSPX had set this whole process in motion when he formally accused Fr. Urrutigoity in a letter to Bishop Timlin dated February 11, 1999. (Jeffrey Bond, Letter)