It wiill help is you gve B spec Bob either a decent car or a car that is tuned properly, otherwise when he gets into 'the red'' on his attitiude metre he wil just loose it like everyone else.
B spec Bob usually drives a racing line similiar to the driving line that is available as a guide on Driving Options.
Make sure your car is light, not maxed out with power, make sure it handles well and has grip and the gear ratio's and brakes are set up for the course.
If there is to much power for the wheels, he will spin the wheels, make sure your power to grip ratio is on the safe side, so when he gets a bit angry, he physically can't spin the wheels.
There are about 10 cheap 4wd race cars and a huge number of 4wd road cars, wherever possible give Bob a 4wd drive car, this way there is no chance he will spin the wheels.
I've put Sports tyres on many of my 4wd race cars and given them to Bob, he wins the race easily, without problem or spins.
Give him the right car, set up in the right way and manage his temper properly and he will be fine.