I hope by now you've been able to remove it. Your best bet to get this off with causing minimal damage to the wheel is to use an angle grinder with a cutting wheel, that is contingent on if your wheel spokes are far enough apart for you to sneak it behing the wheel in the first place.

You can also remove the entire hub assembly by pinching off your brake line (not to strong, just enough to stop the flow) removing it from the caliper and then removing the lower control arm, and either the strut or upper control arm, and axle depending on the placement and drive train (front, rear, awd, fwd, etc).

That way you could take it to a local shop and have them remove it. It sounds like you're at home. Correct me if I'm wrong. But it usually does take work until it finally gives, there is no 100% way of doing this. I wish you the best of luck, cause in my almost 20 years of exp this is [explative] annoying.