They would just claim Venus and Mercury is orbiting the Sun with low inclination to the ecliptic (while the Sun circling above the flat Earth).
What i don't get is the outer planets, how are we able to see outer planets in opposition and conjunction relative to the Sun?
I'm also confused about the inner planet's orbital period, suppose the Sun circle above the Earth every 24 hours, Venus have a (sideral) orbital period of 224.701 days around the Sun. Why doesn't whatever force making the Sun circle Earth every 24 hours strip Venus and Mercury away?