Cdw, not to presume anything (just asking here), would an officer release a suspect with a PTA if they were responding to a 911 call?
The method of the call is not as relevant as the details. The key factor will be what is said by the involved parties and any witnesses, and what the officers observe.
It seems counterintuitive that an officer would find probable cause to issue such a document but then leave the combatant(s) free to roam.
Most agency policies encourage a custodial arrest rather than a cite and release for 243(e). However, it is a possibility. When the state was not paying booking subventions (which was the direction it was headed July 1st ... looks like they are paying some of them right now) then many agencies were looking at cite-and-release policies for many 243(e) cases after transporting from the scene.
It is not usually a good idea to leave the offender on scene as it generally results in a continuation or even escalation of the conflict.
Although, to argue against myself a little, in my years working in bars I did see more than once the police show up, investigate a barfight, and leave both semi-drunk combatants to further imbibe. Never made much sense to me then, either, other than the bar not wanting an extensive arrest history tied to their address.
Bar fights are a pain. Usually no one wants to step and say what happened, or the statements are contradictory and without truly neutral witnesses to determine the main aggressor. And since those fights are misdemeanors not committed in the officer's presence, no private person's arrest means no arrest at all. A public intoxication arrest is a possibility, as is a fighting in public arrest, but these are often a long way to go for nothing. Unless made to prevent further violence, it is not uncommon for the cops to let those on the marginal side of inebriation go.
As one complaint request rejection had written by the DA some years back: "No charges; Drunks doing what drunks do."