You can go ahead and file this one under the “WAAAAHHHH!!! I didn’t get my way so I am taking my ball and going home..”
From Velonews:
“I am stopping competition … It’s a definitive decision,” he told a news conference. “I don’t want this sport anymore … I’m slamming the door and I’m leaving.”
“It’s sad that my career is ending like this but I want to restore my honor … I will prove that I’m not guilty and get the results of this test rescinded,” he said.
Feel free to read the entire Velonews article.