[Groundhog]

I think the loss was the fact that the King came out and declared himself equal to the church... I don't know if they'd even have the power to install a puppet anymore, and killing the High Sparrow is likely to lead to all out rebellion by the peasants.

Margaery's expression when she saw her troops makes me think she manipulated the King because she thought it was the only way she was going to prevent herself from doing the walk. I can see the King doing a total 180 on the high sparrow, but not Margaery.