And you believe that? After all the lies regarding the existence of PRISM? Try googling "SOD NSA parallel construction"
Very likely IMO they caught him using PRISM or other illegal techniques and put together this fake ID as a front to protect the true source. If you read the pdf of the court filings, it says not all information is presented, just enough for probable cause. SOD/Local police have lied to the courts about the source of information in the past, why would they stop?
The article:
-http://www.theregister.co.uk/2013/08/05/sod_squad_found_feeding_nsa_surveillance_info_to_drug_enforcement/
"But part of the deal for getting this data is that the DEA and others should cover up the information's source by setting up a fake investigation trail – a process known as "parallel construction". For example, the police could say the arrest was made during a routine traffic stop or on the word of an informant.
"It's just like laundering money you work it backwards to make it clean," said Finn Selander, a DEA agent from 1991 to 2008.
One federal prosecutor told how he was dealing with a drug case in Florida when a DEA agent lied about the source of information that led to an arrest, saying it had come from an informant. When pressed, the agent admitted the data had come from SOD.
"I was pissed," the prosecutor said. "Lying about where the information came from is a bad start if you're trying to comply with the law because it can lead to all kinds of problems with discovery and candor to the court." He later dropped the case.
Law enforcement agents said that the practice was not uncommon in drug cases. Often a suspect will plead guilty and there's no need to examine evidence in court, but in some cases where the defendant has fought their corner, legal actions have been dropped rather than expose SOD to public scrutiny."