I'm not sure the Mary Jane title was in current continuity anyway, although I haven't read it. But yes, I'd imagine the undoing will spread across all the original continuity books. So he won't be married anywhere, Harry never died decades ago, no one knows his identity, etc.

There have been so many various Spider-Man universes -- regular, Ultimate, Marvel Knights, Marvel Adventure, 2099, the alternate Spider-Girl universe, and odd things like the love books, the manga attempts and various one-shots -- that it's almost as if Spider-Man is everything every month. Now that he's not married in the 'real' AMAZING SPIDER-MAN or AVENGERS (is he even still IN the Avengers?), I'd imagine that would carry over to the accompanying books in the original universe.

Those Stracynski interviews are amazing, by the way. He seems to be distancing himself not only from the marriage erasure but the Gwen storyline for which he was villified. He also seems to be trying to have it both ways -- yes, I can shake up the Spidey Universe but it's not my fault when fans don't like it. This is a case, I think, where the aftershocks and bickering are obscuring his very strong run on the book.