If you try to turn hard, you will turn, really damn hard. You can swerve in a massive arc that can make the snowboard hard to control, but you can also use this to evade immediate obstacles. It's going to require a lot of practice and frankly, having to do a hard swerve is not the optimal decision, when compared to planning your route in advance, but good in close encounters. You shouldn't have to do this too often, but the time will come.