Leak or not, there is way too much of a coincidence with what has been floating around, given the shots of Rob Zombie/Hobbit shipping.
Ghostbusters leaking in any form was to buzzkill these two games imo, and it's doing it well. What I saw didn't surprise me one bit, but given the two sources it came from, it solidified it instead of hoping it did. For me personally, I'm glad I know, because I am way more interested in Ghostbusters NIB than the other two, and I like Hobbit.
Remember too, Stern doesn't like other people making pinball. They will do what they need to stay up front and on top, and so far they are.