Well, to my complete surprise (a pleasant one that is), I got the "standard" response to my email and, a couple of hours later, a direct response to my request and they said that our passports will be mailed back today! And they even included the tracking # of the USPS Express Mail envelope I had enclosed when I originally applied! So, if everything works as they said, I should have the passports tomorrow (I sent them on Monday and they got them on Tuesday).
Mine were received by them on Monday. The USPS does not show tracking status for my envelope yet. Let us see when I will get mine back.