I'm willing trade 6 difficult ways on how NOT to get the spring off, in exchange for 1 way that is easy.
I'm saving up for my next spring change. Dime trick is golden. Makes me feel like I wasn't paying attention for the last 40 years, though.
If spring is still on shove dimes between the coils while extending the spring with the kick stand.
If spring is already off - as you bend it shove a dime between the coils any place you can. About $1.20 in change stuck into the spring should make it easy to install/remove. Maybe you need to add another 50 cents tax to that sometimes to make it work easier.
Try it. It works!