That goes without saying but that's beyond the scope of the IBF's control. Wade got the win so the IBF has to roll with it.
I don't rate Sturm superchamp reign at all he paid a lot money to the WBA and bought the superbelt. Golovkin was Sturm's mandatory in 2010/2011 and Sturm ducked him. In March 2010 Sturm made a declaration of an oath at the regional court of Hamburg that he would rather drop the belt than fighting Golovkin