Thanks for the heads up that Church has had (seemingly) a change of heart towards CRISPR.
One slide, perhaps out of context, does not necessarily mean that Church has jumped ship. This slide could simply be a historical summary view of the "old" Cas Tech versus what the CRISPR community, including George, is looking forward to. Where was this talk given, when and to what audience?
Could you please add any links or direct quotes to this effect? If this is true (I would be shocked and serious doubt it), this is indeed beyond huge and has massive scientific, economic (CRISPR stocks) and potential future clinical implications.