As far as the moment of silence thing, It is an outside issue. There may be some people who, for whatever reason, don't agree with or want to do it. That is not our concern. Our job is just to carry the message of recovery, not of the government where we live. People come to NA to learn how to stay clean on a just for today basis. That's all.
As far as that man possibly relapsing. Don't be so quick to judge. I went through a 3 year period where I was very sick physically and mentally, I had a nervous break down. I only came to meetings once in a while, I turned my phone off, looking at pictures from back then, I really looked like SH*T! Some people thought I was using, but I wasn't.
That issue is between him, his sponsor, and his Higher Power. No one else has the right to judge him on his appearance or his behavior. We are all addicts, and we all have equal right to having a bad day. IF he did relapse, he will get honest about it in his own time.