Laird, if Venus were 'out of its orbit' as recently as Copernicus' time, we'd still see the effects of it.
Could you give me examples of the types of effects we should be seeing, but aren't?
Likely effects I do see include:
The great Red Spot storm on Jupiter that's large enough to have potentially ejected planet-sized bodies.
The short-term comets whose orbits gravitate to Jupiter.
One Galilean moon, whose resonance with the other three has been disrupted in ways that are difficult to explain.
Crustal damage on Mars that is consistent with planet impact.
The apparent rotational resonance that exists between Venus and the Earth.
I can extend this list, if need be.