NASCAR commissioner Steve Phelps is stepping down amid backlash over insulting texts (Sean Gardner)Steve Phelps, the commissioner of closed-cockpit NASCAR series, said Tuesday he will resign from the post and leave the company where he has worked for 20 years by the end of January.The move comes following the revelation of insulting 2023 text messages by Phelps, which came to light during an anti-trust trial involving a team co-owned by retired NBA legend Michael Jordan.Phelps insulted team owne