Unreasonable Deleting and Passer-by 1?

Well, here is the sequence of the events...

Yesterday night before I went to sleep, I found a thread with title said "The Statement Of Unsubscribing The Group" in the douban group call "Men Of The Buddhism, Be Satisfied All Demands". I like communicating on the internet, so I left a message in that thread.

But this morning I got an e-mail which said:Your message has been deleted by the author with the reason is "It's not the time before everything is settled". In fact that was my first time to leave message in that group, and the others in that thread seems familiar each other. So I became the passer-by 1 who always mind other's business, and I should thank myself for that.

What the hell is the reason? Is there anything wrong with my words? Or dose the man have some strange habit? Even or I did not obey the unspoken-rule? All I said was: The power is the "Buddhism", It seems that lots of young girls like it.

It's unreasonable, is it?
For respecting the guests, I hardly delete the messages even though be provoked in my own blog. I really cannot stand for the action of deleting my message without any reasonable reasons.

This is not the first time. Why do the Douban groups so rejective for new members?

BTW: Just before I wrote this post, I could not found that thread any more. Is there another explanation? For an instance, the author deletes his thread, and all of us who leave the messages are notified with the same reason the author gives. From this view, the words is reasonable for the thread title. Maybe this is a good imagination.