I should start blogging these lessons, so I think I will. I'll probably have to grow and develop them as I can, so a single entry probably isn't best.
My first place for ideas has been http://feastuponthewordblog.org/2009/01/25/rsmp-lesson-27-beware-the-bitter-fruits-of-apostasy-joseph-smith-manual/. I'll probably always start there.
Next, I found via the comments a good place at http://the-exponent.com/2009/02/03/relief-society-lesson-27/. I'll have to start looking there habitually too.
Some notes on apostasy were also found at http://www.lifeongoldplates.com/2008/08/bushmans-introduction-to-joseph-smith.html which can be helpful. I really enjoy Bushman's comments.
Also look at "Our Strengths Can become Our Downfall" at
http://tinyurl.com/abnlzp. This is a shortened link from lds.org. I really detest their URL scheme.
Another interesting article.
http://staylds.com/docs/HowToStay.html