We all remember the scene at the end of Battle Ground when Carlos comes to inform Harry that he has been voted off the White Council, listed the charges, most seemed trumped up. Further says that there is a death warrant out for him, but that had been suspended.. Carlos seemingly was pissed and didn't want anything more to do with Harry. What if all of that was an act? A show for the greater viewing crowd of enemies?
Jump to 12 Months, Carlos is much more moderate about his views as far as Harry goes from the last time we saw them together. Carlos seems to have a bit more information about Harry as well, like how did he find out that the castle once belonged to Merlin? How is it that Carlos just happened to be hanging around the castle under veil when it is about to be attacked? Spying on Harry? Not wearing his Warden's cloak, but has his magic Warden's Sword, when asked says "he isn't there and he can prove it." Also says he is being watched, but he will get what White Council intelligence he can. Eb, also acts like nothing has happened, comments on how guickly Harry has gotten so strong.
What if kicking Harry out of the White Council was all part of the plan for the over all BAT? As long as Harry was part of the Council he was under a lot of restrictions. As simply Wizard of Chicago, Winter Knight, and Warden of Demonreach, Harry is free to do or not do Mab's bidding, make further alliances with the White Court, command his Pixie Army. All of that makes him more effective in the war to come, plus neither he nor the Merlin will have to deal with unneeded distractions. Carlos is the go between messenger between Harry and the White Council, and actually Harry has been in on the plan from the beginning. It just looks that way to me at any rate. That there are enemy spies on the White Council and this is the only way for Harry to do what needs to be doing.