Not looked in here for a while and I've only just seen this.
If you've tried to post a few times and you finally got the Post flooding flag, all you have to do is wait a while then have another go.
If you've got a post written, best copy it, then close the thread, then go back to it, click "Reply", then paste the post you copied, then click "Reply" and it should post OK.
It's life Jim, but not as WE know it.
Live long and prosper.