This looks like a customization of the HTC Notifications manager. It comes up when the user taps the top of the screen? Or is it something else. In any case, so a search for the registry entry found here and try that. Hopefully it will bring back the stock WM 6 data bubble, with it's single (but smaller) "Disconnect" button.
http://forum.xda-developers.com/show...=492563&page=2
Quote from there:
"I found a way to deactivate it (I just hate this new layer), but it's a bit ugly : in the registry, go to HKLM\Services\NOTIFICATIONMANAGER and change the "Dll" value to "NotificationManager.dll.bak", then soft-reset."
Actually, you can simply set the flag to 4 just below this entry and have the same effect.