Despite yesterday's fall to 89.70 in European morning, dollar's subsequent rebound to 90.76 suggests the erratic decline from 92.24 has formed a low there and as long as said support holds, consolidation with upside bias is seen for a correction to 91.30/40, however, resistance at 91.79 should and yield choppy trading.  
In the event dollar penetrates support at 89.70, then risk would for further weakness towards 89.20/30 before prospect of another bounce later.