Originally Posted by Ken G

... If you do solve the equations, you will find that tilted orbits are perfectly allowable for long periods of time, and the coriolis force produces no such effect. What the coriolis force does do is quite the opposite-- it causes the Moon to stay in its same plane (relative to the stars) as the Earth orbits the Sun. Other effects can cause perturbations as well, but you can be sure that if the coriolis effect changed the tilt, the Moon's orbit would not still be tilted from the Sun-Earth plane (and it is, and has been, for billions of years). Small problem there...