being new to SB, all the tutorials and instruction videos say to practice linking long turns. That will take up a lot of real estate.
That being noted you can usually see who is doing this and predict their turns. Sounds like he made an unexpected turn and it happens.
I started doing this again to improve my switch riding. I try to keep the pattern going and not take up someone else's line. But sometimes I catch an edge or something and have to compensate to not crash myself, changing my pattern abruptly without warning.
Just trying to improve and have fun, sticking to the blue runs mostly.