Her motivation for holding the knights of the Eyrie back was the fact that if Ramsay had known about them being there, he’d have just holed up in Winterfell for a siege instead of bringing his men onto an open battlefield.

It was a genius level move by Sansa, to make sure the entire Bolton army was committed to the…

There is no spoiler in the title. The episode is called “Winds of Winter”. His article title spoils nothing. And you can’t act like the internet should wait until it can confirm that everyone has seen everything before discussing whatever thing it was that happened.