Ok, so I returned. I was asked to reset the car, hand over my keys, and then told I was set to go. I had to ask, insistently, for proof that I had returned the car. They were just going to send me off with no letter, no email, nothing - just a literal IOU with no proof. I finally got a letter after some poking - it's one sentence that mentions my name and VIN but includes no financial details. I was then told the process will take six weeks.
So, while you can return, the process, in my opinion, is insane. Once you return, you're forced to wait for several weeks with no idea when, or if you will be refunded; even then you have no idea what they will actually send back to you. I am waiting for some undetermined period of time for ~$62,000 sent back to me ... I have no idea how they will actually send it to me.
Now, I really want to order another Model 3, but this whole process has been insane. I cannot see most people being comfortable with it. Ever.