Alfonos Ribeiro apparently pulled his groin while doing the Carlton dance last week, so this week’s Dancing With The Stars rehearsals were a bit rough. And, even after he pulled off an insane routine, the injury acted back up and appeared very painful. Ribeiro wasn’t the only one struggling, though, as partner Witney Carson suffered a back injury during their dress rehearsal. She also had a very rough time last week when she and “switch up” partner Michael Waltrip received very low scores. Ribeiro comforted a crying Carson in the bathroom backstage … Fortunately, the two make a great team and pulled it together for a fantastic routine. Even judge Carrie Ann Inaba gave Ribeiro some congratulatory spanks.