Calm down - If he didn't answer the door I would feel completely free to grab a floor jack and gently reposition his truck a few inches over away from your car. No biggie at all. He will never know it happened.
We have an older woman in our office that can't park her car for anything. It is ALLWAYS crooked in the parking spaces. We joke about it and kid her once in a while. She is a super nice person and a very hard worker but her parking skills leave much to be improved. Aint nothing gonna fix that.
Relax and adjust the truck over.
-Mark.