What to call

[Theisey]

I sense the issue LIRef is trying to get at is this, would you call the illegal block a live ball or call it a dead ball foul.
The basic premise is one way gives the team a TD and the other does not.

One has to assume that the official covering the runner may not have been the official flagging the foul. Time to huddle up and come to an agreement as to did the foul occur before or after the score.
Should the flagging official be the same one covering the runner, it shouldn't be a too much of a problem making that determination.

The bottom line is to get the result right despite the fact the foul was behind what looks to be a sure score. A totally unnecessary block by the offense player.