Well I find these types of discussions pointless as very few minds are changed and usually it only results in hateful words being spread by one side or the other and generally from both directions.
Personally I don't care much for Rick Warren's teachings and he has even admitted that there is not much "real" discipleship going on in his ministry in the masses.
With that being said for whatever it is worth to anyone I really didn't have a problem with what was said in the blog. I didn't watch the video, but encouraging folks to do good to one another is not an all bad thing I don't think.
Not all people are going to accept the death an shed blood of God's Lamb on their behalf, but that doesn't mean we should enourage them to rape, kill, steal, etc.
However I would have to agree that anything that is not done by the Holy Spirit, while it may seem "good" to the eyes of human, it is just a filthy rag.