Anyone that has followed Texas recruiting knows the story on this, and Jamaal Charles didn't cost the Longhorns Martin. Martin was ready to commit to a Texas offer months ago, but it never came, and then Texas offered others for 2016. He was a guy that had a lot of early hype and a ton of early offers, but this staff didn't offer until recently and he felt wronged by that.
I don't fault the staff as they are allowed to have reservations about a player, especially one so early in the process. It's just a situation were early recruiting goes bad. Martin wanted to commit early to Texas, but was never given the chance, and then committed to Baylor. He specifically said in a recent update that he would be a Longhorn right now had they offered back then.