ok, caliper is off, caliper mounting bracket is off, then you should get something to use leverage and kinda pry/pull the rotor off. it seems like it's on there by a bolt or something but it's just wear and tear on that makes it stiff on there. so the two bolts that hold the caliper to the bracket. the 2 bolts that hold the mounting bracket to wheel assembly, then the rotor should come off with a little force. hope it helps.
later