There has to be an explanation of the fact that it is plastered on one side, though. It was close to a planet-size or at least a large-moon-size object that disintegrated. If it weren't for that then this would be a radical theory because there wouldn't be much evidence. I think it's more radical to ignore this plastering than to consider a theory that explains it.
Look again. One side is blasted off. Just like earth. Where is the missing crust?