Ok so I worked on my game with your touch stuff.. and it's "working" on a certain level but where mine varies from your example.. you have a single touch object.. i have two paddles that should be able to freely move on each side.
You can see what happens in my example below. if you start touching on the left side.. and then press right side it is the left side reds.. if you touch on the right side then the left side spawns blues..
here is what i have so far (test with touch device)
part12studios.com/temp/Misc/touchtest/touchtest05
the trouble i'm having is that i need to clearly distinguish two different paddles.. your example has a single "touchpoint" where I have two.
once approach I haven't tried yet though might be to have a single "touchpoint" / "paddle" and based on the X coordinate determine perhaps a frame of animation to jump too.. still a few options but i'm trying to stick as close to your working example..
I can't help but feel like i'm missing one small step in the whole thing to keep this from happening, but i'm in unfamiliar territory with multi touch and it's a bit tough to test quickly.. having to make exports and uploads to web site to really test.