Yeah, I later learned about the airplane mode option. I would have used that, but at some point the screen on my CPAP (also a ResMed AirSense 10) smashed, so I was unable to engage airplane mode. I was able to get a copy of the ResScan software (intended for clinicians), which allowed me to adjust the pressure and other clinical settings, so I continued to use it (although it was incredibly inconvenient as it involved removing the SD card and using my PC). That's when I tried taking the machine apart and physically disconnecting the modem, but it wouldn't operate that way (and with no screen, I couldn't see if there was some simple dialog I had to dismiss to get it to work with no modem).

Really, though, I don't think any of this should apply, as I paid cash out of pocket for both the doctor visits and the CPAP machine itself. No one had any legitimate claim to the data.