Differential Unit problems of the 1997 Acura RL

1) while exiting a shopping mall parking into the street I heard a sudden loud noise followed by a loud grinding sound. My vehicle stopped dead in the middle of the street. When we pushed the vehicle to the curb side, and put it in park it started rolling downhill till I pulled the hand brake. 2) the failure was in the same area for which my vehicle was recalled previously. (99v227000) the spline of the shaft that connects the differential to the transmission had failed. 3) this shaft and the transmission had to be replaced. I have the parts. Note: this failure could have been life threatening due to sudden and unanticipated failure and loss of power. I was lucky that I was not on a highway or main street.