Revealing mistake: Near the end, as they are chasing the girls, the cops turn around on the freeway into the dirt median. They follow exact tyre tracks from previous takes.
Revealing mistake: When they blow up the tanker and drive in circles around the truck driver, the ground has been disturbed from previous takes.
Revealing mistake: Thelma and Louise in one scene are driving at a very high speed with Brad Pitt in the backseat wearing a cowboy hat that never flies off, much less even moves with the wind.
Chosen answer: It's just as you said; he was telling the others to hold their fire. He had no idea that they were going to drive off the cliff; his reaction was evidence of this.
zendaddy621