it wasn't even like I forgot to use advanced sensors after I revealed my dial, I just said "advanced sensors" as I was flipping my dial.
Yeah, that's really bad. I don't see how that is not calling it before it is revealed. I Fly Casual, and nothing like that has ever happened in competitive play for me, I have played all nice folks.
But if someone is going to be a jerk about things, then you live and die by the sword. Fly Casual does not equal roll over and be a doormat. If they keep up that behavior or are excessively stubborn about it, then at that point I'll be sure to tell them that I'll be looking at every single minuscule thing they do, and rain down all the holy hell of the rulebook on them if they do so much as breath the wrong way. I know TOs that have essentially run those kinds of players out of their stores because they are not worth having around.