No Park...bad pawl..or Linkage issue

Is this normal to do without removing the tranny from the car? As understand you have to remove the bolts, then remove the rear trans mount and there are two philips head screws on the tailshaft holding on a metal plate. After removing the screws and the plate, under it is an access hole to get at the clip on the tailshaft support bearing. Ive gotta remove that clip with a snap ring pliers set. That about right? or am i missing something?