http://www.ssd.noaa.gov/PS/TROP/DATA/RT/float2-vis-loop.html

there are storms racing away from the center
the low clouds on the western edge of the depression are also racing westward
the flow southeast of the center that should be southwest is southeast
there is no evidence from any of the observation stations that the wind is circling back around. Note how the clouds are elongating just like TD2 (which everyone disagreed with me on at the beginning) when it was in the same spot
Every system I have seen in the last 12 years that has exhibited the above mentioned characteristics has at very least weakened if not opened up to a wave. 97L had the appearance of a tropical storm for quite a while, but was no more than a wave. Remember Chantal in 2001 that had the appearance of a tropical cyclone, but lacked the LLC needed for classification at the time of this satellite image. I could be wrong (and believe me I want to be), but I am going on experience of what has happened in the past. This will have to wait to get into the western Caribbean before it can strengthen.