[itsall_cooool]

Let the blonde jokes begin!

anyway, try using this registry fix to disconnect easily until you find out what is keeping the connection open. You will need a registry editor (attached) and some caution to make sure you do everything to the letter. registry changes are easy but can mess up your device. If you are unsure when trying just exit without saving and seek help here.

This edit allows you to see the duration of your Vision connection along with a button to disconnect it.
You see it in the bubble that is displayed when you tap the Vision icon on the top taskbar (the evdo (or 1x)box).

Click HKEY_LOCAL_MACHINE
Click ControlPanel
Click Phone
Click the bottom menu 'edit'
Select new dword value
Change the value name to "Flags2" (no quotes).
Select the 'hexidecimal' button.
Type 10
Click ok.
You should now see in the 'name/data' section:
Flags2 16 (0x00010)
exit regedit

When done, wait a full minute, then soft-reset the device.

Good Luck!