I think Gruber's interpretation is one that any person reading the document will have.
Not necessarily. See: http://andreyf.tumblr.com/post/508678742/stop-interpreting-l...
Not necessarily. See: http://andreyf.tumblr.com/post/508678742/stop-interpreting-l...
But if the author is counting on "not using the SDK" altogether then basically your whole developer agreement with Apple is void since the whole purpose was to develop "applications". And if the agreement is void there is no reason for Apple to accept your stuff on AppStore.