Still, "intent to piracy" isn't a crime. He's accused of scraping the documents, not doing anything with them. It's the same crime, whether he intended to use the as a personal library, analyze them, or put them all on The Pirate Bay.
The only question of "intent" is whether he intended to bypass security, and download the documents.
I think it's a stupid law. Wire fraud should only matter if he used social engineering, forged cookies, or some other measure that was intentionally deceiving (see the definition of "fraud"):
From Wikipedia:
Common law fraud has nine elements:
1. a representation of an existing fact;
2. its materiality;
3. its falsity;
4. the speaker's knowledge of its falsity;
5. the speaker's intent that it shall be acted upon by the
plaintiff;
6. plaintiff's ignorance of its falsity;
7. plaintiff's reliance on the truth of the representation;
8. plaintiff's right to rely upon it; and
consequent damages suffered by plaintiff.
Now, he did "lie" - he listed his name as "Gary Host". But were the damages consequential to the plaintiff's reliance on the dummy name? I doubt it.
Robbing a bank while wearing a Mickey Mouse mask isn't fraud. It's robbery, and it might bring down the wrath of the Disney corporation, but the disguise isn't conning anyone, so it's not fraud. Robbing a bank by disguising yourself as a security guard would be fraud, as the disguise isn't just to mask your identity, but to deceive the victim.
Robbing an archive while using phony credentials (but NOT the credentials of a person who is allowed to access the archive) shouldn't be wire fraud.