Goal line to infinity??

[Spifflog]

While watching Monday night football last night (Jets vs. Fish), Al Michaels and company said the league (NFL) always states that the goal extends "through infinity." I think that they said, and hereÂ’s where IÂ’m confused, that as long as the ball carrier doesnÂ’t touch the ground out of bounds, that he can cross the goal line that extends beyond the pylon and score. Did anyone else here this and does it make sense to anyone?