I cannot find a way to do that at runtime. I can disable it at design time, but not at run time.

NLibraryMoveTool myTool = new NLibraryMoveTool();
myTool.Mode = MoveToolMode.Move;

nLibraryTest.Controller.Tools.Remove(myTool);//get an error here

If I am not mistaken, I remember the pointer tool is a combination of the tool selector and tool move. Let me know if am correct in this case.