I'm no hurricane expert, but in the "what if" department, what if Dean does show the same kind of turn that Katrina and Rita showed:

Katrina
http://flhurricane.com/googlemap.php?2005s12

Rita
http://flhurricane.com/googlemap.php?2005s18

Yep. It's going to be all about the "turning winds"...if Dean runs into a strong upper westerly (which is prevailing), then he'll turn...right now the shear forecast is relatively moderate, or so they're saying over at easternuswx.com.

Latest Dean thread:
http://www.easternuswx.com/bb/index.php?showtopic=140133&st=320