You are correct, it can happen before or after, it was a suggestion for something Blaze could do, if you and Daishain want to hold off on starting the final scene, either because you want to get things done, or because you want to see if Erulasto shows up.

In regards to fortifying the Hisil, the best thing he can do is set up the ruins he's gathered from the warehouse, and from the crazed Uratha's Den, which was going to be the opening part of the last scene. I was going to start with a few rolls to determine thing such as: How well fortified is the trap, how well hidden is the trap, how much "Bane Juice" do the Uratha have on hand ect.

Again, these were going to be rolls up to various players depending on how they were getting involved in the fight.