Give Justin and Jeff an A+ for trying to find a way to race but it was pretty obvious after qualifying it was going to be tough for him to be competitive to his standards using a hand break on the steering wheel. They made a wise decision to just use a provisional for points and give him some time to heal. No need for him to put himself in a situation that could complicate his recovery.
You'd think JG was a mad gasser and that may have been true ten years ago. But watch him in qualifying. While others gas the whole track or maybe burp the throttle to setup a corner. JG Gets mostly out of it. keeps the car straight and allows the momentum to have him right from mid corner out where he can get full bite.