An update to our earlier story: Judo official Fletcher Thornton resigned Friday, effective at midnight. The USOC will continue its investigation. One of the mysteries of this situation, brought to light by Olympian Ronda Rousey on an online forum and in her blog, is why these allegations were not investigated by USA Judo, and why Thornton was allowed to continue working with children when his credibility was in question. USA Judo did nobody a favor by not investigating the allegations. The alleged victims have not seen justice, and if Thornton is innocent, his name should have been cleared. Either way, USA Judo has some serious explaining to do.