At first he shoved one photographer, then turned on another, attacking him. Another photographer came to his aid, and held him until officials arrived.
Siner was taken away. There is no word yet on if he'll be charged.
Earlier in the day, Sweeten, accused of faking her own abduction after she disappeared with her 9-year-old daughter in May, pleaded guilty to a pair of misdemeanors.
Sweeten, 38, pleaded guilty Thursday to identity theft and making false reports to police in Bucks County Court. The case is set to continue to sentencing immediately.
Authorities say the mother of three called 911 on May 26 and said she and her daughter had been abducted by two black men at the intersection of Street Road and Central Avenue in Upper Southampton Township, Bucks County.
Prosecutors say she instead used a former co-worker's driver's license to fly to Florida and check into a hotel at Walt Disney World.
Sweeten is also the focus of a federal theft investigation. Authorities are looking into reports that she may have stolen hundreds of thousands of dollars from her own family and the law firm where she worked.