Did you read the article? Paypal provided evidence that the DDoS was coming from...

		wmf on July 27, 2011 \| parent \| context \| favorite \| on: In ‘Anonymous’ Raids, Feds Work From List of Top 1... Did you read the article? Paypal provided evidence that the DDoS was coming from LOIC, a manually-operated non-botnet tool. Also, it sounds like Paypal's evidence was only used to get search warrants, and evidence found in those searches (like LIOC) would then be used to justify arrests.

Not necessarily manually-operated. See also: LOIC Hivemind.