When there are hundreds of loud children playing on a playground, what adult would expect a 6 year old to see a sign being held up by another student, or volunteer that states it's time to get into the lunch line? The children are out there busy playing, as they are expected to be doing during recess time.
You just lost the argument for the parent. Hundreds of kids figure out how to watch for the signal but this little guy and a few others can't? My guess is what you have is normal little boys enjoying recess so much they just don't bother coming in for lunch.
I got this little gem in the mail today. I was never erratic. I did demand my son not serve detention and that I would be removing my son from the school. You told me to sign him out, and I started to. Then I realized, that you and your terrible policies no longer affect me and my children. So I walked to my son's classroom. In hindsight I understand this was a mistake
This sounds as if the parent realized he made a mistake by going down the hall without permission. Parents simply can't ignore rules of a building and intrude on the schools' classroom activity.
I think banning the parent from activities such as the track is not necessary in this case. It would appear the best resolve here would be to meet with all the parties at one time. As someone else said, there is a truth between both sides of the story.
As for someone carrying this parent's facebook message to this site, I feel it is out of place. If the parent wanted to further the battle he would not have said, "this is my last post on this issue".
I hope the little guy in the story has moved on from this. It's highly doubtful that a little guy of six would get to upset about this had ALL the adults not exaggerated the issue.