how to disassemble the gear shifter to try and repair the gear shift trigger at the top of the shift knob

http://repairpal.com/shift-knob-replacement-200 and~~~~~www.youtube.com/watch?v=7-5fcq-OOys

Are we defeating a safety?.....just askin'~

Does the button feel broke? Maybe something else broke, bent, or out of Adjustment. Just trying to save you a Extra headache. Like a park pin/spring. Linkage, wedged walnut or rock somewhere ect.

if it is not moving out of park at first you should turn ignition to 2 position i mean all lights on cluster should be on then push the brake you should listen a magnet clicking sound that is the safety switch now the gear should be free if no first check the electric wire that is coming for safety switch then release the shifter cable maybe the cable is stuck. good luck