Even though I wasn't there this weekend, I can definitely vouch for the location of the problem area. The parking lot peaks out considerably and if you have enough speed, you will get some air. This unsettles the car greatly and they act funny coming off the backside of the hill.
The first subaru accident into the light pole was partially because of the course, and partically because of the crappy tires. The driver (whom I have forgotten his nick) has been racing on 225 pZero's for all season and because he was trying to save rubber, he chose to race on some stock 205 garbage. He pushed it a little too hard and lost it.