Long term SPX vs TNX trendline..

Here's a little meaningless (or is it?) freakishnish where we find when ever the TNX touches it's down trend line SPX begins massive longer term bullish moves.. or at least 4 out of the last 4 times.  Should this strangeness continue you would expect another massive SPX rally to launch..  that is, after we see another trend line kiss of TNX which hasn't happened yet. What would cause a massive bond rally back to the TNX trend line now.. with apparently the move out of bonds already started and every trader around the world balls deep long with leverage in stocks ?