Disciplining the kids properly is the solution.
However, haven't we seen more than enough examples of improper discipline.
I don't think there's enough information in the article to tell if they are handling this really well or not, but since they only seem to be temporarily banning tag, and are doing so because it was getting far out of hand, it sure doesn't seem like they are taking a really bad approach, and might even be taking a reasonable approach based on the situation.
They didn't implement a one size, fits all, zero tolerance approach, and that should be recognized and commended. They gained control over a situation where the kids were out of control.
And they appear to be planning on addressing the problem, rather than just permanently banning any behavior that might be close to being a problem.
The could screw things up from where they are now, but I don't think they have done badly so far, despite the spin the author put on it.