I wouldn’t. Id just show up on the 1st with a trailer, if it’s painted, great, if not oh well it’s leaving with me. Reduces the odds of spiteful actions towards the car.
While that's a possibility - and John will have to be the judge of that - a lot will depend on how the message is delivered.
A lot of us mess that up. John prob handled it best to just turn his back and walk out. Message was clear and he didn't say anything provocative or threatening.