You can use a nut and a bolt in the caliper bracket to "press" it off. You put the bolt through the caliper bracket hole with the nut between the rotor and the bracket. Thread the bolt though the nut and start to tighten. The nut will press against the inside of the caliper bracket and just keep turning the bolt till you break the "seal" on the rotor.
Also a BFH will work.
2000 Mustang GT Steeda #0048
Just because I give you advice, doesn't mean I know more than you. Its just means I've done more stupid ****.