Some of the industry’s trade press today is buzzing about a potential exit from mortgage banking by Tennessee-based First Horizon National Corp. — and we can’t help but scratch our heads. After all, HW reported on the potential exit way back in the middle of April, as company executives said then that they were likely to exit the business, if it couldn’t be sold. Which means, we suppose, that you could be paying our competition to read month-old news — or you could just read HW, and know weeks before everyone else does.