The VIX referred to in the article is now VXO. There is now a new VIX, but I can't remember the reason for the change.
VXO behaves like RSI, the readings can remain overbought or oversold for quite a while without a reversal. 21stCenturyAlert follow VXO and have been predicting an S&P downturn as the VXO has been deeply oversold for weeks. For the sake of my Shorts, I hope it comes soon!
regards, George