And OP, as has been explained to you many times, you *can* get your tax returns. I know you don't *want to* but that is not the same as can't. You can, and very easily too.
The tax returns, though, are perhaps the only thing that ppr may not
have to produce.
I hope ppr is aware (and he should be, if he has read this thread carefully enough and has read at least one of the civil discovery links) that if his reasons to support his motion to quash the subpoena are found to be without merit, the court can grant sanctions. I certainly question his including in his motion an objection to the audio recording of the deposition.
At any rate, if the deposition is not delayed until after the motion is heard, and if at the scheduled deposition ppr does not produce the requested documents that are the subject of his motion to quash, ppr could find himself having to attend a second deposition.
I hope what he has to say actually helps his brother. He really should speak with a Florida attorney prior to the deposition.