Mike, you are totally wrong here. If he wasn't aware it was indirect then that is his problem, he might get lucky and it gets a deflection and goes in so he gets a goal anyway, or it might go in directly in which case you give a goal kick.
Once the ball is kicked it is in play, you can only then deal with what happen after that, be it a goal following a deflection, goal kick if it goes straight in, or free kick / penalty if there are any subsequent offences. The only difference between a DFK and IDFK is the latter has to touch another person before it crosses the goal line for a goal to be given. It doesn't have to be tapped so that someone else can then shoot, they can shoot directly at goal and hope for the best.