NF: Illegal Participation

[DJ_NV]

If a non-player comes onto the field during the down and does not impact the actual play in progress/runner/defense, but does get in the way of a wing official in that the official either contacts or has to obviously move around the non-players, is this technically "influencing" the play in that it may cause the official to be out of position and therefore possibly not able to accurately rule on the play and therefore be a live-ball, basic-spot foul instead of a succeeding spot UC foul as in 9-8-1-i?

thanks