It's not really moving east very much at this point, and is about to go completely north. Look at the trough going from positive (tilted sw to ne) to neutral (tilted n to s) in the central portion of the U.S. Also, the high pressue building down from the north won't let it go east much longer.
http://weather.unisys.com/satellite/sat_wv_hem_loop-12.gif
1 - looks like a bit of dry air got sucked into Ernesto over the last few hours - might be another reason why it started looking less lively.
Check out John - the convection first spread out and then signficiantly diminished. Hopefully he's taking a hit from being so close to the coast.
