Fisher Paykel GWL10US won't spin

I have a Fisher Paykel GWL10US. Today it stopped on the spin cycle and didn't fully drain (about inch or so of water left).

If I manually put it in spin cycle the drain pump spins forwards and backwards. So does the agitator. Water just seems to sit there and foam up, but doesn't drain.

Here is what I have done:

Took out wash tub to see if drain was clear. Took off drain housing. Did find a piece of chewed up plastic in the drain housing. Doesn't seem to go to anything from the washer.

Took off pump motor to make sure it spun freely. It does.

Took off diverter valve to see if it is stuck. It is in drain mode with the power off. Can push the valve with my finger to open and close.

Snaked out the drain hose.

Put machine in diagnostic mode.
- Water valve test. Fine.
- Out of balance and lid switch test. Fine
- Drain pump test. Same as above. Pump spins back and forth and just seems to foam up water.
- Detailed Fault Codes: none.

Any suggestions?

Thanks