Others in that thread are suggesting sending back a request for a refund with your own form, acknowledging that per the original and still-in-effect Terms of Sale you'll be taking full refund of the original number of BTC you paid and that you request that refund. I would ask that Waldo do this, and do it very soon.
At least one person in the HF thread has claimed to get confirmation from HF that they'll honor the original ToS and pay back the full BTC amount, although this is the internet, so you can take that claim with a grain of salt.
I would ask that Waldo do the opposite. That's insane what you are suggesting, any refund request will be gladly accepted by HashFast, but they are the ones who dictate the amount of BTC they will send back to us. How are you going to make them pay the full amount? Who is going to pay for the lawyers? If we do what you are suggesting (customized refund request) we are fucked! They will send partial refund and scratch us of the customers list, resell our miners to somebody else, this time without the obligation to send the MPP.
HashFast wants us to do what you are suggesting, and with our custom refund request we give them the document that we officially requested the refund. Are we that stupid?
Your last paragraph is also wrong. Nobody, I repeat - not a single person, got the fresh confirmation to get the full BTC refund. Quite the opposite, everybody got the confirmation there are only gonna be partial refunds. The famous email you are referring to is from August, and has nothing to do with current official HashFast refund policy.