Perhaps its a good idea to define methodological naturalism. But the real question is whether or not the methods of science could ever detect such supernatural intervention. This is what I mean by recognizing the limits of science. Quite another to actually suggest how it could be detected. Suppose God intervened according to some orderly plan.
Laws are just descriptions of observed regularities.
If I remember correctly, Phil's reason was that although MN and PN may be distinguishable in principle they are not distinguished in practice. It seems to me that the best way to remedy this is to start distinguishing them in practice by criticizing statements such as that by Hoffman above.