What a non-answer that was.
The answer to the question, "What is wrong with "bordering on recruiting" is, nothing. If you are doing 55 mph in a 55 mph zone, you're bordering on speeding, but you're not doing anything illegal.
That said, Coach Marcum's statements in the paper weren't "bordering on recruiting." Recruiting is the process of trying to convince specific athletes to come to your school. Had Marcum said, "Temple produces D1 players, that's why you, John Doe, need to come here", you might have a argument.