[Q] XV6900: Turning bluetooth on or off changes sound profile-can I stop this?

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I have a stock Verizon XV6900 running WinMobile 6.1. I have an issue with the sound profile changing almost every time I turn my bluetooth on or off.

The 6900 comes with only three sound profiles: on, vibrate, and off. I keep mine on vibrate. Whenever - again, _almost_ every time - I turn my bluetooth on or off, the sound profile will change from vibrate to either on or off. I've used different bluetooth devices - Jabra, Motorola, and Plantronics - and get the same results. I've spent time on the phone with Verizon "service techs" (both the non-help screen-readers and the ones who really knew something about the device), and they even forwarded me over the HTC technical support. Everyone has the same response: that's just a glitch in this device.

It's infuriating to miss calls because I took my bluetooth off and turned it off, and my phone went to sounds off! Is there a way to prevent this? Maybe a registry hack to keep the sound profile permanently set to either vibrate or on? Or maybe a script to poll the phone when the blurtooh connection changes? Something???

A drop-kick in the right direction is greatly appreciated.
Ed