During the Activation Phase, if you reveal a 1 [right turn], a 1 [left turn], or a [turn around] Maneuverm you may use the Full ABout [full about] Manuever Template instead. If you do so, treat this as a Red Manuever. After performing any maneuver, you may overlap a Planet Token (i.e. you do not move back along your Maneuver Template). While you are overlapping a Planet Token, you can still perform Actions, attack without penalty, and be attacked (although you roll a +1 defense die). This upgrade costs +5 SP for any ship other than a Bajoran Interceptor
According to the rule book, any ability with the word "may" is optional. Does this mean I can choose whether I want to overlap a planet or not (and willingly slide back along my maneuver template if i choose not to)?