And who are those witnesses?
"Anonymous" witnesses don't count. If Appelbaum has done harm to you, whether you're a woman or man, come out and say it. You can't just say "we heard from anonymous sources that Obama raped someone" and expect to be taken seriously.
Also, you could use your logic to say:
"Who is right here? Thousands of government employees who say they haven't broken the law and haven't done mass surveillance, or this just one high-school dropout guy who fled to Russia?" (obviously talking about Snowden here).
I don't know if that's how Occam's Razor is supposed to work, but if that's how it works, then it's clearly a pretty flawed theory, that at best can be used as a "guideline" not as as hard rule.