What a suicide mission he was on, im sorry but that is not poor driving it is lunacy.
By MSA regulations to race in the uk the car must be fitted with two braking systems, i.e. handbrake and main brakes. So boiling the fluid in the master cylinder would still leave the handbrake. Watch him, he clearly doesnt reach for it, not even an attempt to scrub speed. If he had kept in a straight line on the tarmac, outside line is clear, yanked the handbrake the 300m to the corner he would have hit the tyre barrier with a minimal speed, causing less damage to his car, no damage to other cars and no damage to any people. Also remember the days of thunder saying which actually rings true in most situations, aim for the car cause by the time you get there it is gone. he was always going to hit someone else going to the right, so common sense says steer left.
you notice his first reaction is to jump out the car and run out the way and chat to the marshal, no concern for the guy he just walloped out of the blue through his own stupidity.
His option to go onto the grass was mental, he was damn lucky it didnt dig in and roll which would have caused carnage.
Its the kind of person like this with too much money and no respect who is destroying local racing, the guy he hit could be a guy who spends all he has just to get to the race then some moron wipes him out and probably takes him out for the rest of the season, where as rich git will spend oodles and have his car back next week. Sorry for the rant but you see if all the time in local racing, usually young rich kids with no respect.