You are spinning right off the wake man. What you wanna do is ollie off of the wake kind of like on a skateboard, pitch forward a little bit, and once you get the pop start your FS handle-pass. If you are having trouble with too much tension in the line, you really need to make sure you ollie off the wake, which means you do not want to be edging through the wake. If you edge through the wake you will have too much tension on the line and you will never be able to get that handle pass. Also when you get your pop make sure to bring the handle to your back hip with your thumb pointed down so you will be able to pass it.
One more thing. Practice some wake jumps ollying off of the wake so you can be able to do this trick, because in the video you are not getting enough pop. Hope this helps.