Amarino - Android meets Arduino

After some try with SensorGraph app, I've found the BT module
seems remains paired with my HTC after Android app exit (Amarino, anyway, say "disconnect device").
I need to switch off the Bluetooth on my HTC to really disconnect from
BT module and have the possibility to reconnect again.
If try a new connection without phisically on/off HTC bluetooh , the connection fail.
In the java source code of SensorGraph app, inside the OnStop event, really there is the disconnect command.
There is another software method to disconnect/unpair the BT module and have the possibility to reconnect again without phisically switch off/on Bluetooh on HTC ?

The Amarino will work on Froyo ?