Directional Bias For The Day: S&P Futures are down; moving down from the high of 2437.00 at 8:30 PM on Wednesday Crossed below an uptrend line on 30-min chart which is like a break below an up-sloping flag Odds are for a sideways to down day – watch for break above 2634.50 and 2637.00 Key economic data due: Unemployment Claims (236K vs. 239K est.) at 8:30 AM…