removeBluetoothDevice.ps1

$Source = @"
	[DllImport("BluetoothAPIs.dll", SetLastError = true, CallingConvention = CallingConvention.StdCall)]
	[return: MarshalAs(UnmanagedType.U4)]
	static extern UInt32 BluetoothRemoveDevice(IntPtr pAddress);
	public static UInt32 Unpair(UInt64 BTAddress) {
		GCHandle pinnedAddr = GCHandle.Alloc(BTAddress, GCHandleType.Pinned);
		IntPtr pAddress     = pinnedAddr.AddrOfPinnedObject();
		UInt32 result       = BluetoothRemoveDevice(pAddress);
		pinnedAddr.Free();
		return result;
	}
"@
Function Get-BTDevice {
	Get-PnpDevice -class Bluetooth |
		?{$_.HardwareID -match 'DEV_'} |
			select Status, Class, FriendlyName, HardwareID,
				# Extract device address from HardwareID
				@{N='Address';E={[uInt64]('0x{0}' -f $_.HardwareID[0].Substring(12))}}
}

################## Execution Begins Here ################

$BTR       = Add-Type -MemberDefinition $Source -Name "BTRemover"  -Namespace "BStuff" -PassThru
$BTDevices = @(Get-BTDevice) # Force array if null or single item

Do {
	If ($BTDevices.Count) {
		"`n******** Bluetooth Devices ********`n" | Write-Host
		For ($i=0; $i -lt $BTDevices.Count; $i++) {
			('{0,5} - {1} ({2}/{3}/{4})' -f ($i+1), $BTDevices[$i].FriendlyName, $BTDevices[$i].Status, $BTDevices[$i].Class, $BTDevices[$i].Address) | Write-Host
		}
		$selected = Read-Host "`nSelect a device to remove (0 to Exit)"
		If ([int]$selected -in 1..$BTDevices.Count) {
			'Removing device: {0}' -f $BTDevices[$Selected-1].FriendlyName | Write-Host
			$Result = $BTR::Unpair($BTDevices[$Selected-1].Address)
			If (!$Result) {
				"Device removed successfully." | Write-Host
			} Else {
				("Sorry, an error occured. Return was: {0}" -f $Result) | Write-Host
			}
		}
	} Else {
		"`n********* No devices found ********" | Write-Host
	}
} While (($BTDevices = @(Get-BTDevice)) -and [int]$selected)
Write-Host "`n`nPress any key to exit...";
$null = $Host.UI.RawUI.ReadKey('NoEcho,IncludeKeyDown');