This undated file photo shows Kurt William Havelock , 35,...

This undated file photo shows Kurt William Havelock , 35, provided by the Maricopa County Sheriff's office. Credit: AP

A federal appeals court has refused to reinstate the conviction of an Arizona man accused of planning a massacre at the 2008 Super Bowl before changing his mind.

A full 11-judge panel of the 9th U.S. Circuit Court of Appeals ruled Friday that the rambling statements mailed by Kurt Havelock to media outlets before aborting the attack did not constitute a specific threat.

Havelock was convicted in 2008 of mailing threatening messages, but a three-judge panel of the 9th Circuit overturned the conviction in 2010.

Authorities say Havelock wanted to kill people at the 2008 Super Bowl in Glendale, Arizona.

Havelock was armed with an assault rifle when he reached University of Phoenix Stadium but he told authorities he had a change of heart and turned himself in.

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