Hello and welcome to Just answer.com, Super mechanic here. About your vehicle.
The rubber guides will sometimes move along with the pins. You want to keep turning the pins and then wiggle the caliper so that the pins will clear the brake pad bracket, (which you will want to take off as well by taking out the 2 bolts toward the inside, to get the rotor off)
I have the instructions in a PDF format that you can download HERE
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