Without having looked into the matter, it sounds like Facebook software can't handle networking more than a few friends at a time. As fast as the Facebook phenomenon exploded, the software developers are probably scrambling hard just keeping all the millions of accounts running, much less trying to link many of them together. In any case, s yahoogroup or usenet type newsgroup might be a better way to organize thousands of people than Facebook would be.
It doesn't seem fair to get on Facebook's case about this. Looks like they gave him lots of warnings not to add more people before they banned him.
--tully