First thing first, sorry for my english (I'm French). Next, I think you're talking about when you finish your boardslide and you get out of the slide bar. In my opinion, I think you need to pratice fs pivot, first on flat and after that on a ramp (if you can). This helped me to understand the move of getting out of the slide bar. I hope that will help you, good pratice !

You need to swing your shoulders in the direction you want to go

You can try turning your hips and shoulders in the direction you want to go