Locked out of iPhone! Blue rings?

Hi! I turned on assistive touch on my iPhone 4 and went into gestures. I didn't really know what it was so I tried to get out of it but ended up with four or five blue rings on the screen and then i just clicked somewhere. I didn't really think anything of it, but now my screen isn't responsive! The blue rings are gone. I would reset it, but my lock button is broken. Someone please help!

My screen went unresponsive one time. I had to wait for the battery to die, recharge it, and then it worked again. If that doesn't work I recommend taking it to the Genuis Bar at your local Apple store.