Turns Are All about Leaning [Video]
By all means, the rider in this video doesn't seem to be that fond of switching the leaning angles too much. We see him riding pretty well through the long and easy right-hander, but we also see him failing utterly in the next left-hander, even it the turn itself is no difficult one.
We happened to meet people who were uneasy leaning on to a certain side. When asked, they replied that they were somehow afraid to lean to let's say, left, even though they had no problem doing so on the right side.
If it were the place and time for some advice, we'd say that some more riding lessons with a good instructor could help these guys get rid of such dangerous riding habit.