Possible.
As I've said before, the thing that makes the most sense is that O'Shea wasn't up to assessing the opponents weaknesses, and gameplanning for them on his own, something Gailey would have vast experience in doing.
It doesn't mean Chan is coming in, and installing a new offense, as I assume Schuplinski is quite versed in the Xs and Os of the current system, even if Gailey isn't up to speed with the overarching philosophy.
Is it possible that Flo is a genius, and that it makes a very effective combination?