What works for me is:
Use one hand to depress the button
Hold the steel on the blade firmly with the other hand to tug/wiggle/pull the blade free. May need to use pliers if you can't get a good grip.
It's a PITA to remove a firmly-wedged blade, so after the initial struggle with it, I remove the blade every few uses to prevent it from getting stuck again. So far it's been a reliable method, knock on wood.