No, it isn't moving much. It is very hard to see the center now because of all the convection, but it is still to the SW of Cancun, and if you go to the wv loop, and toggle between the 1245Z and 1315Z frames you'll see the center of circulation. First get positioned on the right frame, then zoom in three times. Above it, the purple moves to the left, and below it, to the right. It is a little closer to Cancun now than Cozumel.

Note: the movement from the loop still showed an oscillation! I was a little surprised. I thought once it got over land that would stop...I think it probably has dampened now to the point where it will be hard to see.