"She was saying things like, 'Don't talk to me - talk to [Auckland Mayor] Len Brown'. Then she unlocked the gate and everyone drove off."
Mr McLeay believed there would have been more than the 20 cars the Herald reported earlier this month were stranded on the mountain on the first night after closing time was brought forward from 11pm to 8.30pm.
He wondered why the guard could not have driven around with a loudspeaker before locking the gate, to give people a fair chance of leaving in time, and questioned the size of a "tiny" sign showing the closing time.
Council spokesman Mike George said the security guard spent about 20 minutes telling people it was time to leave, but had to lock the gate before doing so, to ensure no one followed her in after closing time.
"She was on the maunga [mountain], she went in through the gate at 8.32pm, and locked the gate behind her because there's only one gate on Maungawhau [Mt Eden], only one in and out," Mr George said.
"By the time she got down, of course people had already started to move down, which is why the cars would have been backing up, because the gate was locked. As soon as she got back down herself, she let everyone out."
Mr George said the council, which co-governs the domain with the Tamaki Collective of Maori iwi, was considering erecting a larger sign but he could not comment on whether there may be a case for two gates.