Maybe I am being overly skeptical, but I get very concerned about market timing signals which (coincidentally or not) happen to go all cash before the second half of 2008, and otherwise track or lag the market return. Is there supporting evidence which suggests that the signals used here will avoid the next significant crash? Or are we picking them because they happen to have avoided one crash?
Notice that, for example, the most recent algorithm here also went to cash after significant corrections in 2010 and 2011, and stayed in cash while the market rebounded. That suggests to me that perhaps it caught the 2008 crash purely by chance. Unless you are claiming that the SMA signal in early 2008 was somehow predictive of the excesses of the mortgage-backed securities market.
Here's what it does from mid-2009 onwards.