Looking at the picture, Centre nut undone, then calliper off..
hold this up on the spring, dont twist or strain the flexi.
Then calliper carrier off, then
Wheel back on, dont tighten the wheel nuts allow a slight play in the wheel.
Underneath, piece of wood , with a hammer, using the wood so not to damage the wheel, unless you have a rawhide hammer then wood not needed, ..
Hit the wheel, keep turning it, the hub will come lose.
Once the hub has started to move,, then......
Replace the wheel nuts, turn the hub anticlockwise, and put a bar between two wheel nuts, down to the floor, this will stop the disc turning, crack all pins holding disc to hub, once cracked.
Pull the hub off, dont get tempted to do this BEFORE you have got the hub to move, in case the hub wont budge, you can then still drive it to the garage...