How do I take the caliper off, if it won't budge off the rotor? I mean I can only barely budge the wheel with the wheel on, there's no way I'll just slide the caliper off with the pads on it. It's clamped onto the rotor.

It isn't just not rotating up, it won't loosen itself off the rotor.

I think I'll end up taking it to the shop Monday if I can't figure it out by then. Hopefully they won't screw me over, so far they seem to have been reasonable with the other car.