Well, after poking around at some diagrams last night, I have come up with a theory.

Is it possible that the "smashing" sound is occurring when the washer is trying to shift during the spin cycle?

It only does it when it gets up to about 3/4 of the usual spin speed.

Possibly the shift actuator in the transmission has gone sour?

I'm all about tearing down the tranny to replace individual parts if I can, rather that spend $150 on the whole tranny.

I'll probably start the tear down tonight after work.

Any thought on this would be greatly appreciated.

Thanks,
Nick

Is it making the same noise that you posted on the video?

It sounds like there is noise coming from the agitator itself.
Try running it in spin with the agitator removed to
see if anything changes. If not it might help to remove
the cabinet then run it through spin to try and get a
better fix on where the noise is actually comming from.
You will have to bypass the lid switch by running a jumper
wire between the two outside wires on the lid switch
plug. Dont run anything to the center terminal (thats ground).
Just renember to keep your hands, kids and pets away
from the spinning tub or other moving parts when doing this.

I have run it with no agitator, and get the same noise.

I'll try turning manually tomorrow, and I'll get the results up.