So I'm doing a five lug swap and I've got the front done and I'm on the rear I've got all the bolts and nuts loose, but I can't get the hubs off the splines for the life of me. Is there anyway to make this easier, I've thought about taking the rotors off to just undo the splines, but I don't have another set of splines and the rotor screws just want to strip rather than grip and turn.

The car I pulled the hubs off were hard to get off but they came off, these don't want to.

 

I got mine loose with a brass punch and a ball peen hammer.
Got lose pretty easily.

But make sure you don't mushroom the axle.

 

You can drill the rotor screw heads out with a 3/8 drill bit. After removing the rotor you can usually remove the rest of the screw with your fingers.

As for the splines if you have any spare nuts for the axles, grind the locking tab off and thread the nut on with the tab side in, screw the nuts on slightly less than flush with the axle threads. This will give you a larger surface to beat on and will prevent damage to the axle threads.

 

Try what he said, thats the same route i would take.