Don Carmignani suffered a serious head injury when a homeless man allegedly bludgeoned him outside his mother's Marina District home in an April 5 attack that attracted national attention. READ MORE: Don Carmignani’s Alleged Attacker Will Be Released From JailREAD MORE: Who Is Don Carmignani, the Ex-SF Fire Commissioner Accused of Bear-Spraying Homeless People?Footage from a security camera allegedly appears to show Don Carmignani using bear spray on a person lying on the street on Nov. | Courtesy San Francisco Public Defender’s OfficeCBS Bay Area reported late Tuesday evening that Carmignani denied instigating the altercation with Doty