What I think will happen in a Season 6......Spoilers....
It might be too simplistic, but with the ending theme of how Walt seems to start thinking that the truth is not absolute and bending may be in order....
I think Walt is going to pull out a cell phone and reveal that he recorded the conversation about the golf course...
To me, this sort of falls under the theme of the final episode where he is realizing that he has to change and that things are changing, whether he like it or not...
I was kind of hoping that they would reveal A. Martinez' character as a good character, but I think they are showing he is just as Walt says he is...