Richard, I ran through the models and not many really prolong the system after the Yucatan.
The current runs certainly are not as dramatic as yesterday's GFDL or HWRF. GFS which was the first to pick up on this last week, and earlier this week did allow intrusion north of 21N, now sends it over Mexico and dissapates it. It has disappated it now consistently for two days. ECMWF also dissapates the system toward the end. In my opinion these two models have been most consistently accurate all year. Hence my opinion that the system will not last long enough into the Gulf to be considered a tropical cyclone strike upon the mainland.