WHO WAS THE MAN AT THE GALLERIA MALL ?
This is actually the police officer 1-L-19, Nick Delaney, that got his head smashed against the car by T-800 in 1984. That is why he is so shocked when he sees him – he recognizes him and also knows that this person is a cop killer from ’84. Later on in Pescadero the detectives show pictures of T-800 to Sarah. It’s possible that those are the pictures provided to them by the above mentioned officer. Some say that it can’t be so because the angles are different, but that’s due to the fact that the pictures were taken a long time before the actual Mall scene was shot.