Is there any way to block a Bluetooth device on my Mac?

I’m using DawiinRemote and a GameBoy emulator to play ROMs with my Wiimote, but whenever I try to connect my Wiimote, Mac OS X’s Bluetooth manager connects to the Wiimote before the app can, so it wont work. I had it working yesterday, but now all of a sudden it is connecting to the Mac OS X Bluetooth manager and not the App. What I was thinking of doing was blocking the device from connecting to the Bluetooth manager, but I can’t find any way of doing that.