BAR could very easily find out who owns the vehicle that they think has been clean plugged. Get the names and take UC vehicles to those they feel are dirty.
Hey my friend So and So has a 2003 Honda. He said that it was done by you guys, cost him a little extra but it passed. He also told me you did this other guys, How about it.
I think the real reason for not shutting down what they feel is clean pluger's is the court fight.
Who is going to argue with the BAR if they have you DEAD. Put you on tape. You are there on tape saying for X amount you will take care of the problem.
No court battle. You know you are done. Close up and move on. They have 100% of the evidence. Why spend the time and the money to fight it?
The BAR could get all the info on the car, who owns it, put you at ease and then NAIL YOU.
The guys they think have done it, and don't, will tell them, Sorry but you have it wrong, I DON'T CHEAT.
If you don't want someone to "Get your Goat". Don't tell them where it is tied.