I'd say that gilmer play is illegal because of not having enough players on one side of the ball. I think that's the bigger issue, you should be able to pick that one up pretty easily.
If you're gonig to flag every free kick where players are outside the 9's at the RFP, you're going to flag almost all of them.
It's like when an offensive player comes in the game at the last second, usually a WR and doesn't make it inside the 9's....BUT if the D has a man on the new player to cover him, are you going to call that too even though no advantage has been gained?