The following commentary comes from an independent investor or market observer as part of TheStreet's guest contributor program, which is separate from the company's news coverage.By Jason Pilling NEW YORK ( TheLFB-Forex) -- The S&P 500/Dollar Index inverse-trading relationship is building strength once more. Having taken a sabbatical during the summer months, the correlation is now moving back toward 90% on an intraday near-term basis. Currency traders will undoubtedly be glad to finally see three-month trading channels starting to break down, inline with secondary market trading patterns. Those traders who have already made the move to global futures contract trading really have distanced themselves from the cash market 9-to-5 daily grind, and have a market that can be accessed virtually 24-hours a day. That advantage will be key to long-term sustainability as the year evolves.