Another sell signal

Another sell signal tripped today. DDM which is the ETF fund of the Dow dipped below the moving average line so I closed out the position. I entered this trade back in December of 2012 at 72.50 and closed it out today at 95.09 for a gain of 31%. DDM is the long trade of the Dow but the short trade, which is DXD is pushing the line but hasn't crossed it yet. I'm a little bit skeptical at this point and leery about being whipsawed so I'll wait for more evidence this is indeed a bear market before I commit to going short the Dow. Chart of DDM below.