Final answer:
No, a new release is not required prior to departing Houston if there are no other factors involved.
Step-by-step explanation:
No, a new release is not required prior to departing Houston. In this scenario, the flight has diverted to Houston due to bad fish sandwiches. Diverting to another airport does not typically require a new release unless there are additional factors involved, such as a change in destination or a change in flight plan. As long as the aircraft is deemed airworthy and there are no other regulatory issues, the flight can continue to its original destination after the issue with the sandwiches has been resolved.