The referee stupidly reset them when Palhares had the sub on, sub can't take place off the mat (but a certain amount of grappling could). They were reset in the posistion and Palhares just went for it. Galvao was outstanding too, technical and solid. Interestingly most of the sub wins were leg locks.
Sadly for British fighters they all got knocked out in the 1st round, including the highly touted Dan strauss, he was unlucky drawing Calasans in the 1st.