in your case there is a quite handy workaround, because you are using your
puller in front of a white background.
to hide the scrollbar, you need to put a white object on top of it.
you will notice that every interactive overlay goes above any static layout
so you need to convert this white cover into a interactive overlay. the best
thing would be to convert it to a 2-state-object with two identical states.
make this is a slideshow that autoplays and "tap to play/pause".
this "onTop object" can sit above your scrollable frame, hiding the
not perfect, but does the thing visually.
I like that workaround.
So I made a blog post about it: http://digitalpublishing.tumblr.com/post/9417805730/howto-hiding-the-s crollbar-of-a-scrollable-frame
And an option to turn it of would be very nice.