Incorrect. If it is a spot foul, it is a spot foul. If it is 15 yards or to the 2, it is a previous spot foul. The penalty statement for DPI in 7-3-8-c says "Team A's ball at the spot of the foul if the foul occurs fewer than 15 yards beyond the previous spot." As Kalle said, the spot of the foul is just that: a spot. It is not a line. If you are going to the spot of the foul, you go to that spot and the lateral position may pr may not change. If you are going 15 yards or to the 2, the penalty is from the previous spot and thus the lateral position will not change.