I have been wondering about this more lately. I always smile at DF'd ones, especially the youth. I've heard from some that got reinstated that it's encouraging.
I've went to the car in my drive way to talk to one that came by my home to pick up their child but it seemed that they felt more uncomfortable than I, specifically, saying, "let me go before I get you in trouble." When I responded, "no I'm good", they still said, "I know you are but still, I don't want to take any chances".
So at the hall I only speak openly as necessary, I.e. to say thanks for holding the door, excuse me for crossing over them to be seated. I just really don't want to put them in a position at the hall that could affect their reinstatement.
I don't know, maybe there is a fine line to look for.