Buying volume on the run up has been light too so I don't know what your getting at, so it's like when it's going up then it's natural market forces pushing it up but when it's going down you have all the excuse in the world.
Forex has tons of liquidity any time of day except end of the year where it gets a bit thin. You should try to avoid CAD (exposure to oil) and AUD (exposure to Gold). EUR is pretty safe to trade the dollar with.
You don't watch that much news do you? Remember couple of months back PNC used the trap to buy a troubled bank and everybody praised how well the trap was working. Well PNC is close to closing the deal but they are experiencing some challenges from various entities but it looks like a done deal.