home button re-install on touch 2g

so if i have this right-that gold (z-spring) soddered to mb is ALWAYS suppose to be touching the circuit tape on underside of bezel. if that is true, i assume when you press the home button, it then pushes down the gray "click disk" below it and that makes a "short" of some sort to send iPod to main menu? BTW: do you know if the other gold contact that is just to the left of the charging port is always suppose to be in contact with the metal bracket on underside of bezel? if so, could you "activate" the same function the home button performs by taking a piece of wire and touching both gold contacts? the reason that i ask is that my screen remains "white" (think it is frozen state) and i am trying to reboot by home button/power button technique holding sequence. if i can get it un-froze, i am just going to use "ihome/mquickdo" app instead of home button