The imbecile who invented the quick lock system for soft spikes should be put up against a wall and shot.
I try and change mine regularly, run the soles under hot water before trying to remove the old ones, and yet it’s still a horrible battle getting them out.
An hour it’s just taken me, with the blistered hands to show for it.
Before you put a new spike in, put a blob of Vaseline on the mechanism. Seems to work for me.