Hey cats and kittens....

One of the calipers on my Juicy 5 set is draggin on the rotor and I would like to know if there is anyway to adjust it without bleeding the brakes. I did somthing dumb and squeezed the lever while the wheel was off the bike. Since then, the pads having been dragging on the rotor, creating quite a bit of resistance. I've tried pushing the pistons back in with a flathead screwdriver, but they ain't budging. Any ideas?

Paul