My pleasure. OTOH, TVF postulated an exploding planet for the K-T extinction impact events, as well as another one he’d postulated (hence his need for a revised EPH), because he remained convinced that Jupiter would clean the inner Solar System of all debris from his exploding planets within 10 million years. That of course should have suggested to him that he may have been mistaken about the source of (all, not just some) inner Solar System debris, but he was so sure he was on the right track that he couldn’t come to that conclusion.
Nobody really has the time machine you’d want for a totally accurate picture of the pre-history of our system. To me the biggest single clue is the thing about the axis tilts. Van Flandern might have been right about fissioning being the general source or a general source of new planets but the thing about Earth, Mars, Saturn, and Neptune having tilts in the narrow 23 - 28 degree range does indicate a likelihood of their having been captured as a system.