Just my initial thoughts...
I'm 59, have an IS200 and looking at the video I don't really see much of an issue. There are no other cars in sight and the speeds are relatively low. If it had gone awry, it would have been a low speed knock into the kerb.
I have, in my younger days, thrown the rear out at roundabouts when conditions permit. I once had a Carlton GSI 3000 24V and that chucked it's rear end out with the barest whisper of too much throttle. With this in mind, it was a good idea to get to know what to do when that happened :-)