Yes, even though one of the brothers had blood coming from the back of the head, as police reported on arrival, they were considered "mentally disturbed".
Excerpt LA Times "New details of tiger attack released":
Police still could not say how long the tiger was loose before authorities were notified. The 17 pages of dispatch notes released Friday documented the 19-minute interval between the first 911 call and the tiger's fatal shooting by officers.
The first entry, at 5:08 p.m., begins by quoting an employee from the zoo cafe where the two brothers were saved from the tiger.
"A very agitated male is claiming he was bitten by an animal," the cafe worker said.
Police were immediately dispatched to the scene, and in the chaotic situation that followed, the victims were initially regarded as mentally disturbed, the notes indicate.
"Zoo personnel dispatch now say there are two males who the zoo [considers] 800 [police code for psychological impairment] . . . But one is in fact bleeding from the back of the head . . . at the Terrace Cafe."
BTW, someone on a local (Los Angeles) NPR show yesterday who is in a position to know, said that the tiger's cage showed gouges on the wall where she apparently dug in her claws in an attempt (ultimately successful) to climb out of the enclosure.