You have to be in a comfortable position at the bottom of the squat. The foot position I mentioned should be used as a guideline not a steadfast rule. In fact what I said is a little unclear.
What I meant to say is not to spread your feet out wide like a powerlifting squat (go to most weightrooms and you will see athletes catching Olympic Lifts with there legs practically in a split). You can go wider, as long as your ankle, knee and hips are in alignment.
When you receive the bar you should be in a comfortable front squat position.