I was convinced my engine had spun a bearing because of the repetitive sound of something spinning, then it froze up.  But since your report showed very little metal in the oil, I decided to keep looking.  Turns out, the starter gear got stuck and was still engaged with the flywheel gear while the engine was running.  Replaced the starter, and no more problems!

Your report saved me a lot of time and money!  Thank you so much!