You sure can, through the cunning use of the diabolically-named Reverse behavior ;)
Motion has a special class of behaviors called parameter behaviors. Instead of being applied to the whole object, they are applied to a specific parameter. For example, you might apply Randomize to an object's Opacity to make it flicker.
In your case, just apply a Reverse behavior to the Position parameter of your animated object. Right-click on the "Position" parameter label in the Inspector and pick Reverse from the menu.