After some research, I determined that I had either a bad balancing ring or more likely a bad drive spider. Out of an abundance of caution, I ordered the drive spider, balancing ring, tub seal, driveshaft seal and new screws for the spider assembly. After watching the excellent Appliance Parts Pro's video (which was 42min long) I did the repair pretty much in line with the video. My assumption was correct that the spider assembly had cracked and failed, it was heavily corroded. I was able to remove four of the six screws without issue but had two fail during their removal. I also replaced the driveshaft seal since it was packed in with gunk and gave me some concern. It was nearly a four-hour job all done, and I'm an experienced mechanic/technician. All parts were Samsung OE and were delivered in time in new condition. I did not need the balancing ring, four screws or the tub seal so I will return those items.