Fed OT Rules Question

[paulsonj72]

This was on a fan(I know but it it a legit rules question) and here it is. This the exact text of the question

"Team A scores a touchdown in the first half of the first overtime. Team B is facing a fourth down and goal and of course has to go for the touchdown. The quarterback runs a sweep and is forced out of bounds short of the goal line. Another defender then hits the quarterback and is flagged for a late hit.

The question is, since the flag came after the play was concluded and is, in essence, a dead ball foul, is the game over, or does team B still get a chance to score?"

I will take your answers back to the fourm where this originated and specifiy that the question was answered by officilas. Thank you very much.