Illegal motion or shift?

[BktBallRef]

Originally Posted by Official

Ok I know I've got to be over thinking this. Help me out please.

Offensive players cannot move once they put their hands on the ground they are "married" to the ground.

Once an interior linemen places his hand on or near the ground, he can't lift it.

If a player is in motion at the snap he must be 5 yards behind the LOS.

No. If he's not a back and goes in motion, he must be at least 5 yards behind to LOS.

A player may not move perpendicular to the LOS (Wouldn't this be a false start and not IM though? How could you not blow a movement toward the LOS dead?

He can't be moving toward the LOS when the ball is snapped.

If a player in the backfield is set and shuffles a little to the left/right is this act legal?

Yes.

Is a player set if they are standing motionless and picking their nose?

There's no requirement that the player be motionless. He just has to be set and not making any movement that simulates action at the snap.