I wonder if that would be enough. It seems like his strategy of gumming up the courts with improbable excuses would work in his favor.

I think a code test against the Bitcoin source would have been a pretty damning scene. There was a famous case, in the US, where an extremely successful pop art icon was sued by his ex-wife for passing off her paintings as his. The court allowed plaintiff to literally set up an easel and palette and ask the defendant to reproduce the "Big Eyes" style. Turns out he couldn't paint at all. Total fraud.