As a Wisconsin official, I'll tell you the the call was correct - illegal participation (Wisc. uses NFHS rules). According to your post, the replaced player stayed on the field during the play. So, you had 12 on the field during the play - that is illegal participation, a 15 yard live-ball foul.
As to your behavior, I can only judge by your post because I wasn't there. You stated that since he got the call wrong, he was an idiot. However, you were the one who got the call wrong.
So who is the idiot.
The rule in question is 9-6-3. No replaced player.....shall hinder an opponent, touch the ball, influence the play or otherwise participate. Illegal participation.
Since your player stayed on the field, he both influenced the play and participated. Before you question the influencing part, he influenced because he was on the field during the play and therefor the offense had to account for him in their blocking decisions.