A sharp reversal in commodities over the last hour has brought the entire sector into the red. Gold (GLD -0.6%) - looking like it was set to challenge $1,500/oz. an hour ago - is back to $1,452/oz. Silver (SLV -2.3%). WTI crude (USO -1.2%) falls to $92.46. Copper (JJC -1.9%) dives back to $3.18/lb.