I watched the video. Replacement was easy. This was the second time it had to be replaced though. The piece that goes above the arm seems to wear out quickly, but the fact that this dish washer is used in an office setting and is run every night may play a part in that. The pieces snap together and the edge wears smooth and the spinner falls off into the dish washer.
Glad we could fix it with a small cost and did not have to call a repairman.