Here's what I did:
I got everyone together and did a little showcase with explanations. I showed the family what he knows to do and what words/commands he knows and that those words/commands mean something to him.
I realized that I had never really taken the time to explain it to everyone except in the moment it's happening and that can come off badly causing friction/tension.
George did a great job showing everyone how smart he is! And cute. And funny. When he really wants a the treat in a session, he'll start doing all sorts of tricks to see which one will work. He's so smart that he does the newest/hardest ones on his own to get the treat.
Anyway, I explained and showed how if I say sit, he only gets the treat if he stays seated for the entire ride. No butt coming off of the floor to reach for the treat. He doesn't get the treat for performing unsolicited tricks
Only requests get paid. And that enforcement is key, lest he become confused and eventually won't listen to anyone b/c no one really means it.
I think it went well. They seemed receptive and decided not to try to get him to do tricks b/c of all of the hand signals George knows and how easy it is to confuse those. So that's sort of a win/win. I also got to explain that if you don't want him doing something, just tell him "No". Not "down" for "stop jumping on me". That is just "no". -things like that that help us all work together.
I think things will be okay for now. Everyone really understood about un-training and re-training and mixed messages/signals. Everyone really does appreciate that he is so well behaved (except for his little attitude sometimes lol) and expressed that seeing the results in his behavior and obedience makes it more clear as to why it seems I'm hard on him.