Others seem to have the problems with getting the axle out well in hand so I'll talk about getting the blasted wheel out once the axle is out and the brakes are free.
There are three easy ways to get that bloody wheel out. If you have a modern tyre i.e. anything that is not a 4.00 * 18 "traditional" tyre - let the air out - it will save you doing it in less than ideal circumstances later.
Method 1
You have the bike on an elevated workstand - lucky you. Put the bike on the centre stand and pull it smartly backwards until the rear wheel is "out in space" and then remove downwards.
Method 2
If you have an off-sider (assistant) handy, then put the bike on the centre stand and carefully lay it on its side as far as you dare - assistant then removes rear wheel.
Method 3
If you are on your own and do not have an elevated work platform, this is your best option.
Put bike on centre stand, and then remove FRONT wheel. Put the front axle back in the forks.
Use your luggage straps to secure the centrestand to the front axle - get those straps tight!
Push front end of motorcycle down unto bottom of forks touch the ground - it will stay there, particularly if your fuel tank s near full.
Remove rear wheel downwards.
Couple of pics to show the method.