It is not Colin Seeley, but the track is much hotter than the other one.
Most german sidecar-racer in the 50's and 60's used right mounted sidecars. When they started driving in public road traffic in the case of right-hand traffic, right mounted sidecars where usual. And so the appropriate reactions have become second nature.
When accelerating, the motorbike-combination pulls to the right, when braking to the left. I don't have to stand this reactions on their heads when racing either.