I mean that you dont have to remove anything, you can put a dab of solder onto the flex cable and affix the pin back on. Otherwise you will have to heat gun off the digitizer/front glass to remove the home button which could lead to broken glass, torn flex cables, etc..
It's easier to just solder the pin back on. I've had several of these home button failures brought into my store and just put a slight dab of solder onto the connector from where it came. It's a very simply circuit and I've had 100% success with this method. Make sure its bent up slightly to allow the pressure to connect onto the dock flex cable the activates the home button response. Otherwise you have to fully disassemble the lcd, and heatgun remove the front panel/glass-digitizer and peal out the home button.