Can you change an initialization function after it's already been initialized?

rapier7

So it's simple enough to initialize a function in Datables. For example:

$("#table").dataTable({
"fnDrawCallback": function (oSettings) {
func();
}
});

My question is, after you have already initialized your datatable, is it possible to change the initialized option to something else? How would I go about changing fnDrawCallBack from func() to func2()?