Bigwhistle is, of course, correct. The rules about running the endline after a made or awarded (don't forget the awarded part)score have only changed to the point that if the defensive team violates or fouls on the throwin following the score, the inbounding team may still run the endline, regardless of how many times the defensive team does it (of course, if they go into the penalty with a foul, free throws are shot).
The reason for this rule change is in keeping with the NF philosophy of not allowing a team to gain an advantage by fouling or committing a violation. Until this change, a defensive team could violate, thereby taking away the advantage the offense had to run the endline.
There are many other aspects of NF philosophy, but we won't get into that now.