I really don't get the hate with the Alfred stuff. They established in TDK he can use all the computers, look up bios and all that jazz. He's Bruce's right hand man. Plus Bane is not in the LOS. He's in his own fucked up cult version. It makes sense he would let out that he was excommunicated in order to swerve people.
Now i guess i can agree there could have been other ways to do it. But this is fucking Batman! He's supposed to know his shit before he goes to battle. And Alfred giving Bruce help just isn't all that weird to me.
Bane was never excommunicated from the League. Rhas couldn't bear to look at his face because it reminded him of what happened to his wife, so he shut him out.