Occam's razor sometimes shows that the seemingly improbable is actually the most likely explanation.
LOL. No it doesn't.
Occam's razor says (as a very basic summary) that in the absence of evidence or specific information, the proposal that requires the least assumptions is probably correct. Or, more conversationally, that in the absence of any better ideas, the simplest guess is probably the truth. The simplest guess here is that the guy is a fraud. The non-simple guess is that the guy is not a fraud and that our understanding of matter and energy to date (which is based on a huge body of actual scientific measurement and observation) is all wrong.
I think you are confusing this with Spock/Sherlock Holmes say that when all the impossible proposals are eliminated, the one remaining, however impossible, must be the truth. That's a good maxim to live by; the problem is that we haven't eliminated the possibility that the guy is a fraud.