I am a little confused by A and B in this situation. Assuming Team A is Team 1 and Team B is Team 2:
You are saying that 1 scored a TD and 1 pt try (7 pts) and Team 2 scored a TD but had PAT blocked? Team 2 recovered the blocked kick behind the line of scrimmage and tried to advance but only got the 24 (ball must have been blocked WAY BACK behind the line). Team 1 committed Uns Conduct while the ball was live, however, foul was by non-players. Was there any way you could say the actions of the nonplayers coming on the field interfered with the ball, player or an official? If so, you can go with 9-2-3 an award whatever penalty you deem equitable. I would say 1/2 the distance from prev spot and replay try would be equitable. If you are only going with the Game Admin Interference then it is over.