Well it took a bit to get to it, but it was just the coupler! Not sure why the motor sounded so different this time, but when we opened it up, the coupler rubber had broken into 4 pieces in place, but the plastic parts had not-- in the past, the plastic had been in pieces as well. With that helpful video, we were done in under thirty minutes and several loads of clothes that smelled like campfire are getting cleaned as we speak. THIS time, we checked everything you all suggested, to see if things were spinning correctly, etc. and everything else looks like working order. When we put the washer back, we also checked that it was level to make sure that wasn't causing any added stress-- it was ok. I love to do late-night laundry to use electricity during off-peak hours, so to have my at-home laundry setup back in order is FANTASTIC. I am very appreciative of this forum and it's members helping me learn.
Two orphaned socks were found under the dryer that we couldn't see due to the shadow of the washer, so bonus!
- Samurai Appliance Repair Man likes this