Step 1: Come into this trick with a moderate amount of speed and wind your body in the opposite direction you want to spin. In this case Joel is pre-winding his body to his left but he willwant to spin back to his right.
Step 2: Now lower your center of gravity a bit and start releasing your body in the direction you want to spin.
Step 3: As you start to spin pop into the air and start looking into the direction you want to go.
Step 4: Now start estimating how much more you need to hold onto your spin and adjust your body to come down.
Step 5: Try to land exactly 180 degrees from the where you started in step one. The closer you are to a true 180 the easier it will make riding away.