I think he might go back down to 135. Figueroa is now the interim belt holder or in layman's terms his mandatory defense. He said long before the Paulie fight that he planned to go back to 135 and lets be honest, he did go to 147 for the trinket and there really isn't anything for him in that division at the moment.

There is some historical significance in the move also. Nobody has went back down from 147 to 135 since Henry Armstrong. Maidana for his part would most likely be a lot happier to meet afterward at 140.
Now he looked pretty solid imo at 147 and I have no idea how difficult it would be for him to melt back down to 135 but the guy has played with weight his entire career. And lets face it even at 50% he would dismantle Omar.